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<title cf:type="text"><![CDATA[Editorial department of the Journal of National University of Defense Technology -->信息与通信工程·电子科学与技术]]></title>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Design of data transmission antenna beam angles and directions for solar observatory satellite]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The design of the antenna beam angle and the installation layout of sun-synchronous orbit satellites with the three-axis stabilized sun oriented attitude were put forward. And the antenna beam design and its layout scheme for obtaining the maximum data transmission time to the ground station were proposed. According to the orbit design scheme of the scientific observation satellite, a data transmission antenna pointing to specified ground station antenna beam-pointing simulation model was established. By using the satellite toolkit STK simulation software, the effect of various antenna beam angle schemes and the antenna installation orientation on the data transmission time were simulated and analyzed, the different regularities about the time of data transmission for the satellites of pointing to solar and earth station were discovered. According to the relationship between the satellite-borne data transmission capability and the different antenna beam width, the optimal antenna beam width for data transmission was obtained, which provides a design basis for the beam design and installation of this kind of satellite.]]></description>
<pubDate>2019/12/9 16:59:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZENG Qilin, YU Xizheng and XIONG Weiming]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZENG Qilin, YU Xizheng and XIONG Weiming</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906020]]></guid><cfi:id>48</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Improved energy detection based jamming sensing for aeronautic swarm network]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906021]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to enhance the anti-jamming capability of aeronautic swarm tactical network in complicated electromagnetic environment, the simultaneous transmitting and receiving based cognitive anti-jamming radio was employed in aeronautic swarm network, and the improved energy detection method was proposed to jamming sensing. In the case of single and multi-jammer, the closed expression of false alarm probability was derived, the false detection probability and the optimal decision threshold of jamming sensing. Simulation results show that jamming sensing performance can be improved by adjusting the parameter p of the improved energy detector.]]></description>
<pubDate>2019/12/9 16:59:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[LI Haitao and LIU Changjun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Haitao and LIU Changjun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906021]]></guid><cfi:id>47</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Adaptive mode design of near-earth satellite data transmission link for resistance to rainfall attenuation at Ka band]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[For channel′s time variability and severe rain attenuation at Ka band when near-earth satellites transmit data, using ACM (adaptive coding and modulation) technology can make full use of link resources, and further improve data throughput relative to traditional constant coding and modulation. The design method of the near-earth satellite data transmission link with ACM mode was proposed. The data transmission link model was established under the rainfall environment, then the ACM selection mode was determined depending on the channel condition. The maximum likelihood signal to noise estimation algorithm based on pilot symbols and the moving average smoothing method were adopted at channel estimation to reduce the fluctuation of the estimated value effectively. Simulation results show that no matter on clear or rainy days, the proposed satellite data transmission link ACM mode design method can obtain high data throughput while ensuring system reliability.]]></description>
<pubDate>2019/12/9 16:59:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHANG Ying, XIONG Weiming and WANG Zhugang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Ying, XIONG Weiming and WANG Zhugang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906022]]></guid><cfi:id>46</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Using over-damped electric circuits to synthesize high voltage rectangular pulse]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906023]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Based on over-damped RLC nonsynchronous discharge circuits, a novel high voltage rectangular waveform forming method was proposed. The theoretical analysis showed that the double exponential waveform approaches the rising edge and the flattop of rectangular waveform in a particular situation. Meanwhile the numerical simulation showed the tail of double exponential waveform can be cut off by the artificial current zero. A prototype was designed and tested. The results showed that the prototype can output an adjustable unipolar rectangular pulse with 17 kV amplitude, 330 ns ~ 5.8 μs flattop duration and 110 ~ 350 ns rising time on insulation specimen. The rising time, the positive flattop duration and the negative one of rectangular pulse are adjustable independently. The waveform is not sensitive to specimen variety.]]></description>
<pubDate>2019/12/9 16:59:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHAO Yue, JIANG Jihao, ZHOU Liangji, CHEN Lin, WANG Meng, LI Feng, KANG Junjun and WANG Zhi]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHAO Yue, JIANG Jihao, ZHOU Liangji, CHEN Lin, WANG Meng, LI Feng, KANG Junjun and WANG Zhi</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906023]]></guid><cfi:id>45</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Uncertainty analysis of systematic reliability life and its efficient solution]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906024]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to study the influence of uncertain component failure rates to systematic reliability, a new systematic reliability life-based moment-independent importance measure was presented to analyze the components average impact of component failure rate under uncertainty to systematic reliability life. Inspired by the idea of the Borgonovo moment-independent sensitivity analysis, the proposed method fully takes the complete uncertainty information of systematic reliability life into consideration. Since the moment-independent importance measure was hardly solved accurately due to the implicit format of the inverse function of systematic reliability life function to systematic reliability function, therefore, a new method for Kriging adaptive surrogate model solving was proposed to improve the model prediction precision by adopting the response variation coefficient as the adaptive learning function and automatically increasing new samples. The two test cases of the valve control system and the civil aircraft electro-hydraulic actuator system results show that in the premise of computation accuracy, the Kriging model of systematic reliability life function can be fully approximated by adding small number of systematic reliability life test samples to the variation coefficient adaptive learning function. Hence, the new Kriging model successfully solves the importance measure problem, and the rationality of the proposed method and the high efficiency of the new algorithm are therefore verified.]]></description>
<pubDate>2019/12/9 16:59:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[KAN Lijuan, XU Jihui and CHEN Yujin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>KAN Lijuan, XU Jihui and CHEN Yujin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906024]]></guid><cfi:id>44</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Improving near-source region accuracy algorithms of fast field program of ocean acoustics]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906025]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to improve the near-source region accuracy of the FFP (fast field program) of ocean acoustics, the factors affected the accuracy of the classical FFP were analyzed, which includes the approximation of Bessel function, the neglection of incoming wave term and the low sampling frequency at the farthest horizontal distance region. These factors can lead to large near-source region errors and incorrect results at the farthest horizontal distance region (after the calculation, the acoustic field in the region should be removed). Based on the classical FFP model, improving near-source region accuracy algorithms were presented, which includes the approximate Bessel function with incoming wave term and the solutions in the up-down two triangular domains by covering the source point and symmetric axis with the wavenumber integration solutions (using exact Bessel function). The test cases show that, compared with the classical FFP model, the proposed model can significantly improve the near-field calculation accuracy and the comprehensive performance under the condition of less absolute time increased; compared with the direct wavenumber integration method, the integration time of the improved model is significantly reduced and the practical application value is higher under the condition of the same error order of magnitude.]]></description>
<pubDate>2019/12/9 16:59:50</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[LIU Wei, XIAO Wenbin, CHENG Xinghua, WANG Yongxian and ZHANG Lilun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Wei, XIAO Wenbin, CHENG Xinghua, WANG Yongxian and ZHANG Lilun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906025]]></guid><cfi:id>43</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Improved fast calculation of non-flat bistatic bottom reverberation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906026]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The calculation model for bottom reverberation was improved with the closed-form formulas based on Lambert′s law and the numerical computation method of curve fitting, in order to solve the problem of traditional bistatic bottom reverberation. Different forms of non-flat bottom were designed and their bistatic reverberation were researched. The influence of fitting steps on the computational accuracy of signal-to-reverberation-ratio was also discussed in the situation of periodic or aperiodic non-flat bottom. The simulation showed that the proposed method can quickly get the signal-to-reverberation-ratio of complex bottom terrain when the fitting step is appropriate. Compared with the classical elemental scattering model, the developed model can improve the computational efficiency greatly, while simultaneously keeping the accuracy.]]></description>
<pubDate>2019/12/9 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[GUAN Chengyu, ZHOU Zemin and ZENG Xinwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GUAN Chengyu, ZHOU Zemin and ZENG Xinwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906026]]></guid><cfi:id>42</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Thermal-structure coupling analysis and experimental investigation of the radome fabricated by PMI foam sandwich structure]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906027]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The surface deformation of airborne radome fabricated by PMI foam sandwich structure will happen when environment temperature was changed and the deformation will influence the performance of the radome. However, it is difficult to detect and analyze the thermal deformation of the radome in real time. The radome was calculated and analyzed by the model, which was established by using indirect thermal-structural coupling method in ANSYS. The traditional thermal expansion flake model used to analyze the calculation result in theory. Based on the analysis, the temperature shock test was designed and carried out. Result shows that the thermal-structural coupling deformation of the radome fabricated by PMI foam sandwich structure as the comprehensive strain trend that the expansion degree is the largest at the edge and the expansion degree gradually decreases from the edge to the center of the transparent surface. The average difference between the strain value of indirect thermal-structural coupling calculation and the measured strain value is 35.08%. The value proves the certain degree of credibility of the analysis method and the thermal-structure coupling model.]]></description>
<pubDate>2019/12/9 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[LIU Jun and ZHOU Yuanming]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Jun and ZHOU Yuanming</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201906027]]></guid><cfi:id>41</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Super resolution imaging method using ultrasonic phased array based on the time reversal acoustic theory]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The imaging methods in the field of ultrasonic phased array abide by the Rayleigh criterion and its resolution is limited by ultrasonic wavelength. The time reversal with multiple signal classification, termed TR-MUSIC(time reversal-multiple signal classification), has been introduced to improve the resolution and achieve super resolution imaging under the premise of keeping the ultrasonic working frequency unchanged and maintaining the detection depth of the system. The ultrasonic array data from the test object can be captured via full matrix capture process. Then the data was post-processed by plane B scan as well as TR-MUSIC to obtain the 2-D and 3-D ultrasonic images. The test object was assessed according to the imaging results. A block of steel with six 1mm-diameter side drilled holes, which can be considered as point-like targets, has been machined as the test object. Furthermore, the detection system of ultrasonic phased array has also been built. It is shown that TR-MUSIC can distinguish and locate these targets while the method of plane B scan fails. Therefore, the TR-MUSIC based on the theory of time reversal can increase the imaging resolution, and improve the quality of ultrasonic image.]]></description>
<pubDate>2021/12/4 21:09:56</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[FAN Chengguang, YU Sunquan, ZHAO Yong, YANG Lei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>FAN Chengguang, YU Sunquan, ZHAO Yong, YANG Lei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106008]]></guid><cfi:id>40</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Common view time comparison by new signal system of BDS-3]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to promote the application of BDS (BeiDou navigation satellite system), especially the BDS-3 to join TAI (international atomic time) calculation, BDS-3 common view time comparison was implemented by using the pseudo code measured data of BDS-3 new signal between National Time Service Center of Chinese Academy of Sciences and the Institute of Photonics and Electronics Academy of Sciences of the Czech Republic. The results show that the signal of multipath noise and signal-to-noise ratio of BDS-3 are less than those of BDS-2. Compared with the previous studies, the noise of common view time comparison based on new BDS-3(B1C & B2a) signal is much better than that of the BDS-2(B1I & B3I) compatible signal, which is broadcasted by the BDS-3 satellite, and the results are similar to those of GPS and Galileo, the standard deviation of the result based on BDS-3 signal is increased by more than 40% compared with BDS-2 signal. The noise of BDS-3 single common view is smaller than that of BDS-2, and frequency stability of result is increased by more than 10% relative to BDS-2. The experiment can provide research foundation for the BDS-3 application in the TAI calculation.]]></description>
<pubDate>2021/12/4 21:09:56</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHANG Jihai, DONG Shaowu, YUAN Haibo, GUANG Wei, ZHAO Shuhong, WANG Weixiong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Jihai, DONG Shaowu, YUAN Haibo, GUANG Wei, ZHAO Shuhong, WANG Weixiong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106009]]></guid><cfi:id>39</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Ocean real-time precise point positioning based on BeiDou short-message communication]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106010]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at a desirable solution to the high cost of precision navigation and positioning in the ocean, transmitting real-time service data from multi-global navigation satellite system through BeiDou short-messages device to realize real-time precise point positioning was proposed. Real-time service data was simplified to reduce the costs of communication and hardware, remedying the shortage of BeiDou short-message band width. In order to overcome the low communication frequency limitation of BeiDou short-message service, and to obtain satellite orbit position and clock correction at the time beyond minute interval, a method of forecasting real-time precise ephemeris was adopted. The data process of real-time precise point positioning in ocean based on BeiDou short-message was simulated. Post-processing ocean observation data and testing positioning performance, its accuracy can reach cm-level in horizontal direction and 10～20 cm in vertical direction. Results show that the method can provide effective technical reference for the low-cost real-time precise point positioning in the ocean.]]></description>
<pubDate>2021/12/4 21:09:56</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[JI Shengyue, SUN Jiawen, SONG Yunji, WANG Zhenjie, HE Kaifei, LU Yangwei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JI Shengyue, SUN Jiawen, SONG Yunji, WANG Zhenjie, HE Kaifei, LU Yangwei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106010]]></guid><cfi:id>38</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Remote situational intelligent sensing system for human-machine integration]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the urgent need for human and remote unmanned devices to cooperate precisely and accurately, a remote situational awareness system of human-machine integration was proposed based on the robot operating system, and experiments and analysis were carried out. Based on visual positioning technology, with the integration of human-machine perception as the breakthrough point, through real-time 3D scene reconstruction technology and scene consistency fusion method, the environment and target information detected by unmanned equipment were 3D reconstructed. The result was consistent and fused with the human visual information, and displayed by the augmented reality device, realizing the coordinated positioning between the remote unmanned device and the augmented reality device worn by the person without GPS. The experimental results show that the system has better performance at close range. The accuracy of human-machine coordinated positioning is gradually reduced as the distance increases. The proposed system makes the unmanned device an extension of the human eye, realizing the ability to penetrate obstacles, and crosses the sight distance without interfering with the normal movement of personnel. It can play an important role in future information operations.]]></description>
<pubDate>2021/12/4 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[NIU Wenlong, FAN Mingrui, LI Yun, PENG Xiaodong, XIE Wenming, REN Jingyi, YANG Zhen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>NIU Wenlong, FAN Mingrui, LI Yun, PENG Xiaodong, XIE Wenming, REN Jingyi, YANG Zhen</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106011]]></guid><cfi:id>37</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Design of algorithm for high-precision programmable resistance network generation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to improve the design efficiency of the high-precision programmable resistance network, the physical and mathematical models of the high-precision resistance network were established, and a high-precision programmable resistance network generation algorithm was proposed. The algorithm automatically generates a high-precision programmable resistor network based on the combination of the main resistance network, compensation resistance network and offset resistance network, according to the given range and accuracy. Taking the requirement of measuring range 90~250 Ω and accuracy 5 mΩ as an example, the algorithm was simulated and verified on the MATLAB platform, and the simulation results verified the feasibility of the algorithm. The results show that the generated programmable resistor network meets the requirements of target range and accuracy, and the algorithm solution time only needs 18.128 s. Compared with the manual design, this algorithm greatly improves the design efficiency.]]></description>
<pubDate>2021/12/4 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHU Liwen, YU Lei, JIN Chuanxi, CHEN Panhui, JIA Zhengrong, LIU Minghui]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHU Liwen, YU Lei, JIN Chuanxi, CHEN Panhui, JIA Zhengrong, LIU Minghui</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106012]]></guid><cfi:id>36</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Data availability recovery strategy in information knowledge base]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The information knowledge base can improve production efficiency and reduce resource consumption in industrial production, but it frequently meets with data failure. Furthermore, erasure coding strategies for multi-node failure reconstruction are limited, and the link relationship between participating nodes during the reconstruction of failed data has not been fully considered, resulting in low reconstruction efficiency. Aiming at the data failure of the information knowledge base, a multi-node failure reconstruction method was proposed. According to the data processing capacity of the node, the new node with the highest data processing capacity was selected as the routing node; then according to the link bandwidth of the routing node, the candidate supply node and the remaining idle nodes, the supply node and the new node were determined, thereby constructing the data reconstruction network topology and improving the efficiency of reconstruct failed data. Experimental results show that this method has shorter reconstruction time and higher reconstruction success rate when compared with traditional erasure code reconstruction methods.]]></description>
<pubDate>2021/12/4 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[XU Peng, MENG Yulong, ZHU Qun, SHI Shouchuang, GONG Yuting]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XU Peng, MENG Yulong, ZHU Qun, SHI Shouchuang, GONG Yuting</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202106013]]></guid><cfi:id>35</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Matrix information geometric detectors with manifold filter]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the problem of signal detection in small sample and nonhomogeneous clutter, a matrix information geometric detector based on manifold filter was proposed. The signal detection problem was transformed into a geometric problem on the matrix manifold. The correlation of each sample data was modeled as a Toeplitz positive definite matrix. On the basis, each matrix was replaced by a weighted smoothing filter of its surrounding matrices. The weighted smoothing filter removed part of the clutter energy and improved the discrimination between the target and the clutter. The geometric mean of a set of secondary sample data was calculated. By comparing the distance between the matrix under test and the geometric mean matrix with the detection threshold, the signal detection was realized. Simulation results demonstrate the superiority of the detection performance of the proposed method in small sample and nonhomogeneous clutter compared with adaptive matched filtering.]]></description>
<pubDate>2022/12/1 9:50:48</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[HUA Xiaoqiang, CHENG Yongqiang, WANG Hongqiang, WANG Yongxian, ZHANG Lilun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HUA Xiaoqiang, CHENG Yongqiang, WANG Hongqiang, WANG Yongxian, ZHANG Lilun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206007]]></guid><cfi:id>34</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Joint resource allocation and dynamic task offloading scheme in vehicle multi-access edge network]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the problem of task offloading failure caused by the excessively fast vehicle moving in the Internet of vehicles, an effective task offloading risk assessment model was designed, and a dynamic task offloading scheme based on joint resource allocation was proposed. Time, energy consumption, and risk were jointly modeled as system utility, and the system utility was maximized through joint optimization of offloading decision and resource allocation. The optimization problem was formulated as a mixed integer nonlinear programming. Convex optimization techniques were used to solve the computational resource allocation problem under a given offloading decision, power allocation was optimized through fractional programming technology. The simulation analyzes the impact of vehicle mobility on system utility, and the rationality of the proposed scheme is proved.]]></description>
<pubDate>2022/12/1 9:50:48</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[XUE Jianbin, AN Yue, GUAN Xiangrui, AN Yaning]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XUE Jianbin, AN Yue, GUAN Xiangrui, AN Yaning</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206008]]></guid><cfi:id>33</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis of electromagnetic radiation characteristics during typical explosives explosion]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A set of electromagnetic radiation measurement devices based on short-wave omnidirectional antennas and ultra-wideband omnidirectional antennas was designed to measure the electromagnetic radiation generated by TNT explosions, and the data was processed to obtain electromagnetic radiation characteristics.The results show that the explosive mass has a significant effect on the time domain characteristics of the electromagnetic radiation generated by the explosion. The greater the mass, the shorter the delayed response of the electromagnetic signal, the longer the duration, and the earlier the peak time. 60 kg TNT explosion generated electromagnetic radiation signal frequency is mainly concentrated below 100 MHz, the most concentrated energy is in the 0～50 MHz band, the explosive composition has the largest effect on the spectrum distribution, and the electromagnetic radiation spectrum distribution generated by different components of the explosive explosion has obvious specificity. Electromagnetic radiation intensity generated by dynamite explosion shows a strong correlation with the distance from the burst center. The intensity decreases with the distance increasing, and the magnitude of the decrease is large. Charge configuration and detonation mode will change the geometric movement pattern of the explosive during the explosion process, resulting in the non-uniformity characteristics of the explosion electromagnetic radiation propagation.]]></description>
<pubDate>2022/12/1 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[CUI Yuanbo, KONG Deren, ZHANG Xuehui, ZHANG Yifei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CUI Yuanbo, KONG Deren, ZHANG Xuehui, ZHANG Yifei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206009]]></guid><cfi:id>32</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research on optimal configuration of energy storage in integrated power system with pulse load]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206010]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Considering the vessel environmental constraints and the requirements of pulsed load, it is necessary to rationally select and configure the ESD(energy storage device) to improve the performance of the vessel integrated power system. For this reason, based on the weighted minimal module ideal point method and analytic hierarchy process, a performance evaluation function of ESD was proposed, and the optimal configuration was carried out with this function. The proposed function fully considers the system requirements and pulse load characteristics, and takes the ESD volume, weight, and economy as the main components of the evaluation function. At the same time, it takes power, energy, voltage, and state of charge as constrains to establish an optimal configuration model. The differential evolution algorithm was adopted to solve it. The proposed model was solved and calculated with the example of high performance lithium battery and supercapacitor. The results show that lithium battery has better performance and are more suitable for integrated power system under the given weight. Besides, the guiding configuration scheme was given.]]></description>
<pubDate>2022/12/1 9:50:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[GAO Xueping, FU Lijun, JI Feng, ZHANG Yan, HUANG Meixian]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GAO Xueping, FU Lijun, JI Feng, ZHANG Yan, HUANG Meixian</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206010]]></guid><cfi:id>31</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Vibration interference analysis of underwater acoustic detection system and its suppressing method]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the problem that the carrier vibration of underwater detection system interferes with the micro-Doppler spectrum of target echo signal, the approximate multiplicative expression of interference was derived from the basic principle of interference generation. With obtaining vibration interference data, an interference suppression algorithm for multiplicative interference was proposed. Meanwhile, the error caused by the approximate algorithm was analyzed according to the approximate conditions when the multiplicative expression of interference was derived. Simulation results show that the proposed method can effectively suppress the interference which is derived from vibration of underwater acoustic detection system and imposed on the micro-Doppler spectrum, and the algorithm error can be ignored generally.]]></description>
<pubDate>2022/12/1 9:50:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[TANG Bo, TAN Siwei, ZHANG Jingyuan]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>TANG Bo, TAN Siwei, ZHANG Jingyuan</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206011]]></guid><cfi:id>30</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Polarimetric calibration method using passive calibrator set including 22.5° dihedral angle reflector]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In practical applications, the traditional Whitt passive point target calibration algorithm often leads to the problem of incorrect solution of polarimetric distortion matrix, which makes it impossible to calibrate the polarimetric distortion correctly. To solve this problem, on the basis of analyzing the cause of failure in solving the distortion matrix of the commonly used Whitt algorithm, a new polarimetric calibration method using 22.5° dihedral was proposed, including a new calibrator set, a preprocessing procedure for measured polarimetric scatter matrix and a new eigenvalue match rule, which could prevent wrong eigenvalue match result and thus wrong calibration result effectively. Simulation results verify its effectiveness and robustness.]]></description>
<pubDate>2022/12/1 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHANG Daoming, DENG Xiaobo, ZHANG Yong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Daoming, DENG Xiaobo, ZHANG Yong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206012]]></guid><cfi:id>29</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Application of incremental meta-learning IDBD algorithm in signal detection of shaft-rate electric field]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to improve the detection ability of weak ship shaft-rate electric field in the background of marine environment electric field, the ALE (adaptive line enhancement) based on incremental meta-learning IDBD (incremental delta-bar-delta) algorithm was proposed to improve the traditional LMS (least mean square) algorithm. The proposed algorithm was used to process the measured shaft-rate electric field signal data generated by the ship scale model. The results show that the algorithm can effectively separate the weak shaft-rate electric field signal from the broadband background noise under the condition of low SNR(signal-to-noise ratio). Compared with the ordinary ALE algorithm, the proposed algorithm has a more significant effect in improving the SNR of the signal, and has a faster convergence speed and a smaller steady-state error, which greatly improves the ability to test shaft-rate electric field of the ship.]]></description>
<pubDate>2022/12/1 9:50:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[BIAN Qiang, ZENG Wenshi, OUYANG Hua, TONG Yude]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>BIAN Qiang, ZENG Wenshi, OUYANG Hua, TONG Yude</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206013]]></guid><cfi:id>28</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Evaluation method of electromagnetic interference situation for satellite navigation system of unmanned aerial vehicle]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In the complex electromagnetic environment of the battlefield, satellite navigation receivers are susceptible to EMI (electromagnetic interference) and cannot be positioned. In response to this phenomenon, a method for evaluating the EMI situation of satellite navigation receivers based on unmanned aerial vehicle′s environmental perception was proposed. When the navigation receiver was not interfered, the characteristic parameters of the EMI and the receiving state of the navigation receiver were used as the input of the prediction. When the receiver tracking loop was lost, the effect threshold was used as the observation target value to establish the XGBoost prediction model. On this basis, the rank of the EMI situation of the navigation receiver was given, and the situation assessment method of the navigation receiver under single-source or dual-source were proposed. Compared with the prediction methods of Gaussian processes for regression and support vector regression, the results show that the XGBoost method has the better prediction accuracy. According to this prediction method, the comprehensive utilization of the technology schemes and the tactical schemes is beneficial to improving the adaptability of unmanned aerial vehicles in complex electromagnetic environments.]]></description>
<pubDate>2022/12/1 9:50:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHANG Qinglong, WANG Yuming, CHENG Erwei, CHEN Yazhou]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Qinglong, WANG Yuming, CHENG Erwei, CHEN Yazhou</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206014]]></guid><cfi:id>27</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Cooperative airspace allocation of early warning aircraft and jamming aircraft in offensive operations]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the problem of cooperative airspace configuration of early warning aircrafts and jammers in offensive operations, and on the premise that early warning aircraft and jammers can ensure their safe and effective implementation of aerial target perception and long-distance support jamming operations, the decision-making models of airspace configuration of early warning aircraft, airspace configuration of jammers, target angle estimation model and optimal decision-making model of cooperative airspace configuration were constructed based on the electromagnetic interference between them, in addition, a collaborative effectiveness evaluation model was proposed. Combined with the proposed algorithm process, the location relationship of the cooperative airspace configuration of early warning aircraft and jammers was simulated and analyzed according to the attack angle and the vertical pattern factor of jammers, and the optimal airspace configuration of early warning aircraft and jammers in cooperative operation was obtained, which has certain practical significance.]]></description>
<pubDate>2022/12/1 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[QI Wei, CHENG Dongsheng, WU Wen, JIANG Wei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>QI Wei, CHENG Dongsheng, WU Wen, JIANG Wei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206015]]></guid><cfi:id>26</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Trajectory optimization of single unmanned aerial vehicle for bearings-only target localization in urban environments]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[To solve the problem of radiation-source target localization for a single UAV(unmanned aerial vehicle) in an urban environment, a new trajectory optimization algorithm for bearings-only target localization based on the environment prediction method was proposed. Interacting multiple model methods coupled with the extended Kalman filter was used to estimate the target localization in the line-of-sight and non-line-of-sight mixed environment. Based on the estimated target location and urban geographic information system, the electromagnetic signal occlusion region and the multipath interference region were calculated by using the line of sight tracking method. Under the framework of receding horizon method, the UAV prediction trajectory was generated, so as to maximize the Fisher information matrix determinant as the orientation positioning evaluation criterion. Considering the influence of building obstacles and their occlusion and reflection effects in the localization process, the UAV was controlled to choose the optimal heading flight.The numerical simulation results show that the trajectory optimization algorithm enables the UAV to perform high-precision bearings-only target localization in the complex environment containing obstacles, signal occlusion, and multipath interference. The algorithm provides a new way to solve the problem of bearings-only target localization for single UAV in an urban environment.]]></description>
<pubDate>2022/12/1 9:50:49</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[CHEN Fangzheng, HAO Shaojie]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CHEN Fangzheng, HAO Shaojie</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202206016]]></guid><cfi:id>25</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Review of the detection and removal methods of raindrops attached to the lens surface]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Visual system is an important part of autonomous unmanned system. The raindrops attached to the surface of the camera lens will produce artifacts in the image, resulting in the degradation of image quality, which will significantly affect the performance of the visual system. The detection and removal methods of attached raindrops in recent years were comprehensively and deeply researched. The essence of the problem was condensed, and the existing raindrop imaging models were summarized. Different technical methods were sorted out from three directions:model-based, data-driven and camera system-based, then the development of deep network model was summarized from two aspects of network architecture and loss function. The existing datasets of attached raindrops were summarized, and the performance of some algorithms was compared through the experimental results. The main problems in the task of raindrop detection and removal were discussed, and the possible development direction in this field was prospected.]]></description>
<pubDate>2023/6/7 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[LI Zhong, OUYANG Bin, QIU Shaohua, CUI Xiaopeng, XU Xinghua]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Zhong, OUYANG Bin, QIU Shaohua, CUI Xiaopeng, XU Xinghua</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303017]]></guid><cfi:id>24</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Noise suppression method for multi-subband radar signal fusion]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[All-pole model constructs a linear model of signal, and various parameters of the estimated signal can be obtained by fixing the order of the model and calculating it, so as to realize signal prediction. Before sub-band fusion, coherence processing is required and can be solved by means of coherence function and so on. Since the root-MUSIC algorithm is not robust in pole selection in a low signal-noise ratio environment, it will cause the model to judge the order incorrectly. In order to solve the problem that the order estimation of subband fusion is inaccurate when the signal-to-noise ratio is low in the all-pole model, a noise suppression method was proposed. The main diagonal singular value matrix of Hankel matrix was weighted to eliminate the noise component, and the overall forward prediction matrix was used to obtain the pole value and pole amplitude of the multi-subband fusion signal, so that the multi-subband fusion signal at low signal-to-noise ratio was estimated. The results show that the proposed method has better estimation results than the traditional pole-model scheme when the signal-to-noise ratio is -20 dB to 10 dB in simulation environment.]]></description>
<pubDate>2023/6/7 9:08:56</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[JIANG Yilin, TANG Sanqiang, LU Manjun, ZHANG Liting]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JIANG Yilin, TANG Sanqiang, LU Manjun, ZHANG Liting</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303018]]></guid><cfi:id>23</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Construction and verification of spectrum map by using monitoring data]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A spectrum map construction method based on general regression neural network fitting and clustering Kriging was proposed, in which the path-loss and shadowing components were estimated by general regression nerual network for trend-surface fitting to improve the construction accuracy. In order to improve construction efficiency and guarantee the accuracy meanwhile, monitoring data clustering and optimal neighborhood selection were utilized to reduce the amount of calculated data. The proposed method can realize the accurate and fast construction without prior information by only using limited amount electromagnetic environment monitoring data. A spectrum map prototype verification system was designed and implemented, real measured data from vehicle-based collection system was utilized for testification of the feasibility and performance of the proposed method.]]></description>
<pubDate>2023/6/7 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHA Song, XIA Haiyang, HUANG Jijun, LIU Jibin, MA Chen, LI Bing]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHA Song, XIA Haiyang, HUANG Jijun, LIU Jibin, MA Chen, LI Bing</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303019]]></guid><cfi:id>22</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Design of ultra-wideband energy selective surface for protection of high intensity EM fields]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to deal with the threat of strong electromagnetic pulses to electronic information systems, an ultra-wideband strong ESS(energy selection surface) with transceiver compatibility was designed, which can effectively expand the operating bandwidth and frequency of the ESS, and can provide no less than 14 dB protection effect in L、S、C-band. The ESS was a periodic structure, with each unit containing a pair of arrow shaped structures and a switching diode. It can adaptively switch the reflection or transmission state according to the energy density of external irradiated electromagnetic waves, thereby achieving strong electromagnetic protection and compatibility with working signal transmission and reception. Simulation research shows that the insertion loss of this new ESS in the L、S、C band is less than 1 dB, and its protection effectiveness reaches 22 dB. Finally, the performance of the designed sample was verified in the waveguide. Results show that the average insertion loss of the sample in the waveguide is 1 dB, and the protection effectiveness reaches 14 dB, which preliminarily verifies the low insertion loss and high protection effectiveness of the designed structure.]]></description>
<pubDate>2023/6/7 9:08:56</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[WU Zhaofeng, XU Yanlin, LIU Peiguo]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WU Zhaofeng, XU Yanlin, LIU Peiguo</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303020]]></guid><cfi:id>21</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Optimization of voltage zero crossing switching strategy for 5L-ANPC inverter considering snubber circuit]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303021]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The topology of 5L-ANPC(five-level active-neutral-point-clamped) converter has a simple structure, which can be directly supplied by the common direct current bus, and is easy to realize energy feedback. It is very suitable for the 5～10 kV propulsion variable frequency speed regulation in the integrated power system of ship. The topology and basic working principle of 5L-ANPC were briefly introduced. Based on the analysis of four commutation circuits of 5L-ANPC topology and considering the assembly and adaptability of the snubber circuit, a single capacitor integrated snubber circuit was designed. The over-voltage problem of internal switch in 5L-ANPC topology with snubber circuit using traditional voltage zero crossing strategy was analyzed and an improved output voltage zero crossing switching strategy was proposed,which ensure the safety of switching device and avoid the abnormal voltage jump. The effectiveness and correctness of the improved strategy are verified by simulation and experiment.]]></description>
<pubDate>2023/6/7 9:08:56</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[JIANG Linfei, XIAO Fei, HU Liangdeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JIANG Linfei, XIAO Fei, HU Liangdeng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303021]]></guid><cfi:id>20</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Characteristics of corrosion electric field model and analysis of genesis of singular peaks in submarine propeller area]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[To address the problem that the boundary conditions affect the electric field signal characteristics when the boundary element method is used to derive the electric field distribution of corrosion in submarines, resulting in the phenomenon of singular peaks in the propeller area, the measured polarization curves of marine 921 alloy steel and nickel bronze propeller materials were used as the modeling boundary conditions, and the electric field characteristics under constant potential and nonlinear boundary conditions were analyzed. By establishing the equivalent circuit of hull propeller electrochemical impedance under the parameters of impedance spectrum, the reason of the singular peak in the propeller area of submarine corrosion electric field was analyzed. The simulation results show that the characteristic distribution of submarine electric field and the phenomenon of singular peak in propeller area are related to the electrochemical polarization state of submarine material, and setting the nonlinear polarization boundary parameters reasonably can achieve the effect of weakening the singular peaks and smoothing the corrosion of the electric field model.]]></description>
<pubDate>2023/6/7 9:08:56</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[HE Fang, WANG Xiangjun, WANG Xiaobei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HE Fang, WANG Xiangjun, WANG Xiaobei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303022]]></guid><cfi:id>19</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[False alarm interference laws of dual frequency electromagnetic radiation in band to stepped frequency continuous wave radar]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303023]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to master the false alarm laws of dual frequency electromagnetic radiation in band to radar, the stepped frequency continuous wave radar was taken as the research object, based on the theoretical analysis and effect test, the level change law, waveform characteristics and location law of false alarm target were studied. Results show that:under the effect of dual frequency electromagnetic radiation in the band, the tested radar can generate at most two “hill type” false alarm targets with random positions without considering intermodulation interference, and the distance difference is related to the frequency difference of dual frequency interference. The two components of the dual frequency interference signal suppress each other, that is, if the intensity of one component is constant, with the enhancement of another component, the level of the false alarm target formed by the former decreases slowly and the final deceleration is basically constant, while the level of the false alarm target formed by the latter increases gradually until the level is constant. If the strength of the two components of the dual frequency interference signal increases in the same proportion, the levels of both two false alarm targets rise approximately linearly at the initial stage, and then the growth rate gradually decreases to zero.]]></description>
<pubDate>2023/6/7 9:08:56</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHAO Kai, WEI Guanghui, DU Xue, ZHAO Hongze, ZHENG Jianyong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHAO Kai, WEI Guanghui, DU Xue, ZHAO Hongze, ZHENG Jianyong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303023]]></guid><cfi:id>18</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Important node evaluation algorithm for electrical power system inspired by internet thinking]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303024]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Effective identification of important nodes in power system is helpful to improve robustness of system and reduce the probability of accidents by applying additional protection or changing the topology of important nodes under limited resources. Inspired by the web page sorting algorithm, an algorithm called E-SALSA (electrical stochastic approach for link structure analysis) was proposed for evaluating important nodes in power system. Taking into account the influence of power system topology, power flow and other factors on nodes, this algorithm can effectively reflect the true situation of power system, and its features are more in line with the background of power system. In the IEEE300 node power system, the E-SALSA algorithm was compared with the electrical median algorithm and the MBCC-HITS (model based on co-citation hypertext induced topic search) algorithm by using the two indexes of the scale of load loss and the maximum subgroup size. The results show that the E-SALSA algorithm has advantages over electrical median algorithm in both indicators. Compared with MBCC-HITS algorithm, E-SALSA algorithm can use all factors more comprehensively on the impact of nodes, which further proves its rationality and effectiveness.]]></description>
<pubDate>2023/6/7 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[GENG Junqi, SUN Xianming, SONG Huihui, QU Yanbin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GENG Junqi, SUN Xianming, SONG Huihui, QU Yanbin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202303024]]></guid><cfi:id>17</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Online map generation method from remote sensing images viasemi-supervised adversarial learning]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[To address the resource consumption issue of obtaining precise paired samples in existing fully supervised learning, while also considering the quality of network map generation, a novel semi-supervised online map generation model based on generative adversarial networks was proposed, which aimed to realize the direct generation of intelligent remote sensing images into network maps by using only a few precisely matched data and a large amount of unpaired data. In addition, a semi-supervised learning strategy based on transformation consistency regularization and sample enhanced consistency was designed, which overcomed the inconsistency problem caused by imprecise paired data and derives better generalization performance of the model. Adequate comparison experiments were conducted on different map datasets. The generated online maps outperform the competing methods on the quantitative metrics and visual quality, which validate the effectiveness and speed of semi-supervised network map generation methods.]]></description>
<pubDate>2025/6/3 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[WU Jiangjiang, SONG Jieqiong, TIAN Jilong, CHEN Hao, SHA Zhichao, LI Jun, PENG Shuang, DU Chun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WU Jiangjiang, SONG Jieqiong, TIAN Jilong, CHEN Hao, SHA Zhichao, LI Jun, PENG Shuang, DU Chun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503014]]></guid><cfi:id>16</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Nonlinear state estimation for unmanned aerial vehicles: extendedexactly Gaussian variational inference learning method]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the problems of large estimation error and poor anti-interference ability in state estimation and parameter learning of time-varying nonlinear systems, a batch state estimation and parameter learning method for accurate sparse Gaussian variational inference for nonlinear systems was proposed. A loss function was proposed based on Gaussian variational reasoning, and the state estimation problem was transformed into an approximation problem to the true posterior, and parameters that need to be learned were introduced. The parameters of the state probability distribution were iteratively updated using the Gauss-Newton optimizer method, and a complete state estimation iterative scheme was obtained by using Steins lemma, the sparsity of the covariance matrix and the Gaussian volume method. The noise parameters of the measurement model were learned through expectation maximization, and the inverse Wishart prior was introduced to reduce the influence of measurement noise and outliers on parameter learning and state estimation results. The simulation experiment was carried out on the UAV simulation model, and the UAV trajectory can be accurately estimated without adding the UAV movement and the real value of the measurement noise, and the impact of measurement noise and measurement outliers on trajectory estimation accuracy is effectively suppressed.]]></description>
<pubDate>2025/6/3 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[LIU Jiufu, Elishahidi S.B.Mvungi, WANG Hengyu, XIE Hui, LIU Xiangwu, WANG Zhisheng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Jiufu, Elishahidi S.B.Mvungi, WANG Hengyu, XIE Hui, LIU Xiangwu, WANG Zhisheng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503015]]></guid><cfi:id>15</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Mix variational mode decomposition long short-term memory forpredicting of reservoir surface displacement and deformation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to improve the prediction accuracy of the displacement and deformation of reservoir, the displacement and deformation of non-linear and non-stationary reservoir was predicted by changing the decomposition method of VMD(variational mode decomposition) and integrating VMD and long short-term memory. A MVMDLSTM (mixed variational mode decomposition long short-term memory) model prediction method was proposed. The reliability of the new method was verified with multi-source datasets for different single prediction models and combined models.The experimental results show that the MVMDLSTM model can effectively attenuate the bias of the single prediction model and the empirical mode decomposition combination model estimation, and the prediction accuracy of the MVMDLSTM model is better, which provides an effective data decision-making for the stable monitoring of the prediction and warning of the reservoirs slow sliding and creeping and other small deformations.]]></description>
<pubDate>2025/6/3 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[SUN Xiwen, HE Xiaoxing, LU Tieding, WANG Haicheng, ZHANG Yuntao, CHEN Hongkang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>SUN Xiwen, HE Xiaoxing, LU Tieding, WANG Haicheng, ZHANG Yuntao, CHEN Hongkang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503016]]></guid><cfi:id>14</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Few-shot space target recognition method based on adaptive crossfusion of local features]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In the few-shot recognition scenario of space targets observed at low frequency, the drastic changes in the image representation of space targets in different poses challenges to the extraction of discriminative features and the correlation of features between images. To address these issues, the few-shot space target recognition method based on adaptive cross fusion of local features was proposed. Based on the existing few-shot learning framework, the feature cross fusion module based on self-attention and cross-attention was used to adaptively learn the correlation between local features, improve the discriminant and robustness of feature in different poses, effectively explore the similarity between the support set and the query set, and improve the accuracy of feature association with representation differences. Meanwhile, the sample label weight based on neighborhood density was employed into the loss function to solve the learning bias problem of the network model caused by unbalanced space target datasets. Through the verification on different datasets, the proposed method is proved to achieve higher recognition accuracy．]]></description>
<pubDate>2025/6/3 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[XIE Wenxi, REN Xiaoyuan, WANG Canyu, JIANG Libing, WANG Zhuang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XIE Wenxi, REN Xiaoyuan, WANG Canyu, JIANG Libing, WANG Zhuang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503017]]></guid><cfi:id>13</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Spatial-temporal encoder-decoder model for traffic flow prediction]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to solve the problem that many traffic flow prediction research methods are unable to comprehensively explore the dynamic hidden correlations in traffic data, the dynamic spatio-temporal variation characteristics were studied and an encoder-decoder-based traffic prediction model was proposed. In the model, both encoder and decoder mainly consisted of multi-head spatio-temporal attention mechanism modules, and a connection attention mechanism was added in between to analyze the spatio-temporal correlations of the road network. The model also used a dynamic embedding module consisting of a combination of both spatio-temporal embedding coding and adaptive graph convolution to analyze the dynamic and static information of nodes. Experiments on two real datasets demonstrate that the spatio-temporal model outperform other models for long-and short-term traffic prediction. Thus, the spatio-temporal encoder-decoder model can effectively handle complex spatio-temporal sequences and improve the traffic flow prediction accuracy.]]></description>
<pubDate>2025/6/3 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHANG Jin, PI Yu, SUN Cheng, WEI Yehua, YU Fei, YAO Wei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Jin, PI Yu, SUN Cheng, WEI Yehua, YU Fei, YAO Wei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503018]]></guid><cfi:id>12</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Current optimization control technology ofimpressed currentcathodic protection system with electric field stealth]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Based on the impressed current cathodic protection system and its current output mode, in order to achieve the purpose of taking into account the underwater electric field stealth on the basis of hull anticorrosion function, the “integrated” method was adopted to replace the traditional “zonal” anodic current control method, and the current adjustment strategy based on underwater electric field and reference potential measurement information was proposed. The main idea is to transform the cathodic protection current optimization problem with respect to natural corrosion state into the minimization problem of the electric field increment under water with respect to electric field stealth. The effectiveness of the proposed current optimization control method was verified through the simulation calculation and shrinkage ratio model test.The results show that when the peak-peak potential is taken as the evaluation criterion and the whole ships electrical potential meets the anticorrosion requirements, the peak-peak potential of the  1.0<i>B</i> depth measurement plane can be reduced by more than 20% compared with that in the natural corrosion state of the ship. Moreover, the proposed method can quickly calculate the output current of each anode required by the impressed current cathodic protection system for both electric field stealth and hull anticorrosion.]]></description>
<pubDate>2025/6/3 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[JIANG Runxiang, YANG Pengcheng, CHEN Xingang, SUN Zhaolong, ZHANG Jiawei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JIANG Runxiang, YANG Pengcheng, CHEN Xingang, SUN Zhaolong, ZHANG Jiawei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202503019]]></guid><cfi:id>11</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Design and verification of three-dimensional spatial location deployment method for unmanned aerial vehicle base station]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to overcome the problems of high computational complexity and long simulation cycle caused by the characteristics of strong dynamics, high timeliness, multiple constraints, and strong coupling during the three-dimensional spatial deployment of UAV-BS(unmanned aerial vehicle base station), an EGO(efficient global optimization) algorithm was proposed to determine the three-dimensional spatial deployment location of UAV-BS. Considering that the EGO algorithm mainly obtains new sampling points by optimizing the EI(expectation improvement) function, the improved DE(differential evolution) algorithm was proposed to optimize the EI function. The improved DE algorithm improves the optimization ability and convergence speed by adopting the successful parent selecting framework and the offspring generation strategy self-adaptive selection framework. Three typical engineering problems were selected to test the performance of the improved EGO algorithm. The results show that the optimization ability, optimization speed, and stability of the improved EGO algorithm are significantly improved. On this basis, an application example of using the improved EGO algorithm to deploy a UAV base station in three-dimensional space was given.]]></description>
<pubDate>2025/4/14 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[LI Peng, CAO Jiang, PING Yang, LIANG Dongchen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Peng, CAO Jiang, PING Yang, LIANG Dongchen</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502018]]></guid><cfi:id>10</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Radar echo characteristic analysis and parameter estimation method for rotor UAV]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The proliferation of “low, slow and small” UAVs (unmanned aerial vehicles) poses a serious threat to flight safety in airspace. Accurate analysis of the characteristics of UAV echo signals is of great significance for the detection of non-cooperative UAVs. Based on the time-domain integral echo model of rotor UAV target and the principle of cepstrum algorithm, the frequency-domain expression and cepstrum expression of echo signal were derived, the corresponding relationship between echo signal parameters and frequency-domain and cepstrum characteristics was analyzed, and a parameter estimation method for UAV echo signal was proposed, and the effectiveness of this method was verified by simulation and measured data. The results show that, it can estimate the bandwidth and rotation frequency of UAV echo signal more accurately and provide an important reference for target detection and recognition of UAV.]]></description>
<pubDate>2025/4/14 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[LIU Lutao, XIE Liangzheng, MO Yuhan]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Lutao, XIE Liangzheng, MO Yuhan</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502019]]></guid><cfi:id>9</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Sparse direction finding for GNSS spoofing source in underdetermined scenarios]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the problem that the traditional subspace-like direction finding algorithm fails in underdetermined scenarios and requires the number of signal sources as a priori information, a GNSS spoofing source direction finding method based on coprime array was proposed to improve the application security of satellite navigation receivers in spoofing environment. The cyclic correlation matrix was constructed to reduce the impact of noise on the performance of the coprime array signal processing, and the virtual domain equivalent array signal was obtained by vectoring the cyclic correlation matrix. On this basis, an optimization problem based on sparse signal reconstruction in virtual domain was designed to achieve high-precision, multi-degree of freedom direction finding for sources by minimizing the fitting error. Simulation results show that compared with traditional subspace algorithm, the proposed algorithm has higher estimation accuracy, and the direction finding results are still reliable under the case of underdetermined.]]></description>
<pubDate>2025/4/14 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[ZHAO Yuqing, SHEN Feng, XU Dingjie, MENG Zhen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHAO Yuqing, SHEN Feng, XU Dingjie, MENG Zhen</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502020]]></guid><cfi:id>8</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Improved fast sparse Bayesian learning algorithm for underwater acoustic channel estimation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502021]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to guarantee the long-term stable communication of underwater devices, the IFM-SBL(sparse Bayesian learning based on improved fast marginal likelihood maximization) algorithm was proposed to estimate underwater acoustic channels with low complexity and high performance. Especially in the case of low SNR(signal-to-noise ratio), the performance of proposed algorithm can be further improved by threshold denoising and discrete Fourier transform denoising. Simulation and sea trial results show the output bite error rate after channel estimation of IFM-SBL is similar to that of EM-SBL(sparse Bayesian learning based on expectation maximization), and it has good robustness in both low SNR and fast or slow time-varying channels. The running speed of FM-SBL and IFM-SBL algorithm is 90% better than that of EM-SBL algorithm, which greatly reduces the estimation time.]]></description>
<pubDate>2025/4/14 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[JIA Shuyang, ZOU Sichen, LIU Baoheng, ZHANG Xiaochuan, DA Lianglong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JIA Shuyang, ZOU Sichen, LIU Baoheng, ZHANG Xiaochuan, DA Lianglong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502021]]></guid><cfi:id>7</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Coating damage detection of vessels using corrosion electric field]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The corrosion electric field signal of ships has characteristics such as low frequency and difficulty in elimination, and it is a kind of physical field feature of ships with obvious line spectrum characteristics. Ships with different coating damage areas have distinct electric field distribution characteristics, and the corrosion electric field signal can be utilized to detect the coating damage location of ships. Therefore, a detection method combining RCHFRDE(refined composite hierarchical fluctuation revise dispersion entropy) and IHHO-KELM(improved Harris Hawk optimization-kernel based extreme learning machine) was proposed. RCHFRDE was used to extract the feature information of the corrosion electric field signal, which was then input into IHHO-KELM for training to detect the coating damage area. The effectiveness and reliability of the proposed method were verified through simulation experiments and scale model experiments of ships. The experimental results show that this method can effectively predict the single damage area of the ships coating. The detection accuracy rates of simulation data and measurement data reach 94-67% and 89-00% respectively. It can be used as an effective supplement to non-contact detection methods in cases with less prior environmental information.]]></description>
<pubDate>2025/4/14 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[HU Yucheng, WANG Xiangjun, LIU Wuqiang, WANG Shichuan, LIU Yi]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HU Yucheng, WANG Xiangjun, LIU Wuqiang, WANG Shichuan, LIU Yi</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202502022]]></guid><cfi:id>6</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Resistive random-access memory: from physical mechanisms to integration and applications]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20260220]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[RRAM (resistive random-access memory) has emerged as a promising non-volatile memory technology due to its simple device structure, low power consumption, fast switching speed, and excellent scalability, addressing the data movement bottleneck in traditional compute-memory separation architectures. However, challenges in switching uniformity, cycling endurance, and integration reliability hinder its widespread adoption. This review systematically examined recent advances in RRAM, covering mechanism analysis, performance modulation, process integration technologies, and innovative applications. Starting from resistive switching mechanisms, key approaches based on process optimization and electrical programming strategies were summarized to enhance device uniformity and reliability. At the integration level, recent advances in CMOS（complementary metal-oxide-semiconductor） compatibility at advanced technology nodes and high-density 3D(three-dimensional) integration of RRAM were systematically reviewed. In terms of applications, the development trends of RRAM in high-energy-efficiency in-memory computing, neuromorphic computing, intelligent sensing, and secure chips were analyzed in detail. Towards the future, synergetic cross-scale innovation spanning mechanism, material, and architectural levels were emphasized, supporting the strategic goals of the integrated development of intelligent computing and information technologies.]]></description>
<pubDate>2026/4/8 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[LIU Qi, CHEN Chao, CHEN Pei, ZHANG Xumeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Qi, CHEN Chao, CHEN Pei, ZHANG Xumeng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20260220]]></guid><cfi:id>5</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Survey on dual-function radar-communication waveform design]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20260221]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[DFRC (dual-function radar-communication) is proposed to overcome spectrum conflicts, hardware redundancy, and electromagnetic compatibility bottlenecks inherent in traditional separated architectures through hardware resource sharing and isomorphic signal waveform design, whereby the integrated operational effectiveness and battlefield survivability of platforms are significantly enhanced. The evolution of DFRC technology from its conceptual inception, through architectural advancements, to system implementation was systematically reviewed. The DFRC waveform design methodologies based on mainstream signal schemes were analyzed emphatically, including linear frequency modulation, orthogonal frequency division multiplexing, and orthogonal time frequency space. Furthermore, various sensing-centric waveform design criteria were explored in depth, such as beampattern matching, Cramér-Rao bound minimization, information-theoretical design, and so on. The engineering roadmap from software-defined radio compatibility verification and airborne multimodal waveform fusion to multi-node and multi-domain cooperation was summarized, clearly illustrating the theoretical-to-practical transition of DFRC. Through presenting the complete technical evolution of the DFRC system from the conventional system to multiple-input multiple-output system, and then to the prototype demonstrations, this overview provides systematic theoretical guidance and practical references for future research and development of DFRC systems.]]></description>
<pubDate>2026/4/8 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[TANG Bo, WU Wenjun, XIA Xuecheng, WANG Xiongpeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>TANG Bo, WU Wenjun, XIA Xuecheng, WANG Xiongpeng</atom:name>
</atom:author>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Generative artificial intelligence assisted radio spectrum cognition: advances and challenges]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20260222]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In recent years, generative artificial intelligence is progressively introduced into the field of radio spectrum cognition due to its powerful capabilities in data distribution fitting, data generation, and data completion. Compared to conventional approaches relying on physical modeling, mathematical interpolation, and discriminative artificial intelligence techniques, generative AI has significantly enhanced the accuracy of radio spectrum cognition. This paper systematically reviewed the research progress of generative artificial intelligence in radio spectrum cognition, with a focused analysis on the technical principles, application scenarios, and representative works of different generative paradigms. The challenges faced by generative AI in spectrum cognition were further discussed, including scarce training data, limited generalization in unknown scenarios, and insufficient model interpretability. In the future, by cross-modal knowledge fusion, physics-informed embedding, and the establishment of a trustworthy assessment framework, generative artificial intelligence is expected to advance radio spectrum cognition toward high precision, robust generalization, and enhanced interpretability, thereby effectively supporting the efficient utilization of spectrum resources.]]></description>
<pubDate>2026/4/8 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[LIU Zhiyuan, SONG Lingyang, LIU Qingyu, ZHANG Shuhang, ZHANG Hongliang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Zhiyuan, SONG Lingyang, LIU Qingyu, ZHANG Shuhang, ZHANG Hongliang</atom:name>
</atom:author>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research on foundation models for radar remote sensing: progress and prospects]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20260223]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Foundation models have become a focus in radar remote sensing intelligent interpretation due to their provision of universal and generalizable solutions. Significant progress has been achieved in both theoretical and applied aspects of radar remote sensing foundation models, making it imperative to systematically summarize current research advancements. In order to further advance the research on radar remote sensing foundation models, the concept, key technologies, and evaluation methods of foundation models were expounded. Besides, current research progress and application performance were reviewed, with representative approaches and typical instances summarized. In conclusion, discussions and future directions were highlighted from four perspectives: model architecture design, interpretability research, lightweight methods, and security assessment.]]></description>
<pubDate>2026/4/8 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[WANG Xinchao, CHEN Siwei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Xinchao, CHEN Siwei</atom:name>
</atom:author>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Review of modular stacking technology of solid-state pulsed power driver for high-power microwave]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/20260224]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Solid-state pulsed power driver is essential for realizing compact and high-repetition-rate operation of high-power microwave systems. This paper reviewed the domestic and international research status of solid-state pulsed power driver, focusing on the investigation and review of three mainstream modular superimposed technology routes: solid-state Marx pulse generator, solid-state linear transformer driver, and solid-state stacked Blumlein line pulsed power driver. From the perspective of switches, the current technical challenges were mainly concentrated on three aspects: the constraining factors of switch operating characteristics and frequency enhancement, the energy loss and thermal management, as well as the driving and control. Meanwhile, the future development trend of high-repetition-rate solid-state pulsed power drivers was also discussed, providing a reference and basis for the research and exploration of technical routes related to such driver.]]></description>
<pubDate>2026/4/8 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·电子科学与技术]]></category>
<author><![CDATA[YANG Zenghui, ZHANG Zicheng, HU Taizhuang, ZHANG Huibo, GAO Jingming, YANG Hanwu, ZHANG Jiande]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YANG Zenghui, ZHANG Zicheng, HU Taizhuang, ZHANG Huibo, GAO Jingming, YANG Hanwu, ZHANG Jiande</atom:name>
</atom:author>
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