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<title cf:type="text"><![CDATA[Editorial department of the Journal of National University of Defense Technology -->专栏：电子战]]></title>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Application of analytic network process in evaluating the electro-optical protection combat effectiveness]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306006]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Considering the deficiency of analytic hierarchy process in evaluation of electro-optical protection combat effectiveness, analytic network process was proposed to evaluate, toke analyze of the independence, correlation and feedback of the interior of the element hierarchy as entry point, putted forward the main index dictionary of electro-optical protection combat effectiveness, setted up the evaluation model, according to setting up the matrix, calculating, obtaining the weights, complete the evaluation. Validate the model by an example obtains evaluation results with high reliability, which provide theory-reference for evaluation of electro-optical protection combat effectiveness.]]></description>
<pubDate>2024/11/27 0:00:00</pubDate>
<category><![CDATA[专栏：电子战]]></category>
<author><![CDATA[WANG Yu,OU Zongwei,CHENG Li]]></author>
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<atom:name>WANG Yu,OU Zongwei,CHENG Li</atom:name>
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<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306006]]></guid><cfi:id>7</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Weighted sum rate optimization for intelligent reflecting surface-aided wireless network]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[For the transmission design problem in an IRS(intelligent reflecting surface)-enabled network, by jointly designing the transmit beamforming and IRS reflecting coefficient, the goal of this paper was to maximize the weighted sum rate for multiply ground users, subject to the transmit power and the unit modulus constraint. To solve the non-convex objective, we developed an alternating optimization method, where the phase shifter optimization was solved by the RMG(Riemannian manifold gradient) method, and the beamforming was obtained by the bisection search method. Furthermore, an element-wise block coordinate descent-based method was proposed to reduce the complexity of the RMG method. Simulation results verify the effectiveness of the proposed algorithm, and demonstrate that IRS can significantly improve the spectrum efficiency, when the reflecting coefficients are properly optimized.]]></description>
<pubDate>2024/11/27 0:00:00</pubDate>
<category><![CDATA[专栏：电子战]]></category>
<author><![CDATA[NIU Hehao,LIN Zhi,WANG Yong,WANG Lei,ZHAO Qingsong]]></author>
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<atom:name>NIU Hehao,LIN Zhi,WANG Yong,WANG Lei,ZHAO Qingsong</atom:name>
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<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306007]]></guid><cfi:id>6</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Impact of transceiver IQ imbalances on cooperative jamming suppression in confidential communications]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A CJ(cooperative jamming) masked secure communication architecture was proposed for confidential communications when malicious interference and illegal eavesdropping coexist. Thereinto, the FH(frequency-hopping) technology was adopted in the transceiver to avoid malicious interference, and the CJ technology was employed to block illegal eavesdropping. Nevertheless, the proposed architecture employs a wide frequency bandwidth, which will raise nonnegligible IQ(in-phase and quadrature) imbalances at the transceiver oscillators. In view of this, the mathematical modeling was conducted on the signal distortion caused by the imbalance of the receiving and transmitting IQ channels, a mathematical expression for SDNR(the signal to distortion-plus-noise ratio) at the receiver was provided, and a closed-form expression for the system CJSR(CJ suppression ratio) was derived. Simulation results show that the power of the signal distortion raised by transceiver IQ imbalance is much greater than that of the thermal noise. Besides, both the SDNR and CJSR will decline sharply as the transceiver IQ imbalance deteriorates, and when the magnitude and phase imbalance are 0.95 and π/50 respectively, both the SDNR and CJSR performance will deteriorate 47 dB.]]></description>
<pubDate>2024/11/27 0:00:00</pubDate>
<category><![CDATA[专栏：电子战]]></category>
<author><![CDATA[SONG Changqing,CHEN Wenwen,ZHAO Hongzhi,SHAO Shihai,TANG Youxi]]></author>
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<atom:name>SONG Changqing,CHEN Wenwen,ZHAO Hongzhi,SHAO Shihai,TANG Youxi</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306008]]></guid><cfi:id>5</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Spatial domain collocation interference suppression method based on auxiliary array in integrated platform]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Due to overlapping frequency bands between frequency-consuming devices, the local transmitter will cause serious collocation interference to the receiver, causing the saturation of receiver antenna interface and failing to work normally. In response to the above problems, a collocation interference suppression method based on auxiliary array was proposed, a collocation interference suppression system model based on auxiliary array was established, the expression of minimum residual interference power was derived, channel conditions that need to be satisfied for collocation interference suppression was proposed. In addition, the location of the auxiliary was analyzed when main-transmitter array was non-cooperative, and the relationship of the locations of arrays was analyzed when the main-transmitter array was cooperative. The theory and simulation results show that the collocation interference suppression method based on auxiliary array can effectively suppress collocation interference at the receiver antenna interface without affecting the transmission efficiency of the local main-transmitter array.]]></description>
<pubDate>2024/11/27 0:00:00</pubDate>
<category><![CDATA[专栏：电子战]]></category>
<author><![CDATA[LI Tong,PAN Wensheng,SHAO Shihai,DU Linsong,SHI Chengzhe]]></author>
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<atom:name>LI Tong,PAN Wensheng,SHAO Shihai,DU Linsong,SHI Chengzhe</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306009]]></guid><cfi:id>4</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Semi-supervised generative adversarial network framework for modulation recognition of communication signals]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306010]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the problem that the accuracy of the existing modulation signal recognition model was low under the condition of weak supervision with only a small amount of labeled data, a semi supervised learning framework based on generated countermeasure network was proposed. By performing a redundant spatial transformation on the communication signals, the method can adapt to the generative adversarial network model and retain rich signal adjacent features. Through the introduction of Wasserstein generative adversarial network-gradient penalty, a semi-supervised learning framework suitable for electromagnetic signal processing was constructed to realize the effective utilization of unlabeled signal samples. In order to verify the effectiveness of the proposed algorithm, sufficient experiments were conducted on the RADIOML 2016.04C dataset. Experimental results show that the proposed method can train an efficient classifier under semi-supervised conditions and obtain excellent modulation recognition results.]]></description>
<pubDate>2024/11/27 0:00:00</pubDate>
<category><![CDATA[专栏：电子战]]></category>
<author><![CDATA[ZHOU Huaji,XU Jie,ZHENG Shilian,SHEN Weiguo,WANG Wei,LOU Caiyi]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHOU Huaji,XU Jie,ZHENG Shilian,SHEN Weiguo,WANG Wei,LOU Caiyi</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306010]]></guid><cfi:id>3</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study of high-power microwave protection technology based on low-temperature plasma]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Plasma has a unique protective effect against high-power microwave attack. Based on the plasma fluid approximation method, the time dependent evolution of the incident electric field during the interaction between high-power microwaves and columnar plasma arrays was studied by using COMSOL software, and the physical process and mechanism of plasma protection against high-power microwaves were analyzed. The results show that the incident high-power microwave will change the plasma parameters drastically, especially the electron density will increase sharply, so that the plasma will show metal-like electromagnetic properties to the incident high-power microwave, and finally realize the effective protection against the incident high-power microwave. In addition, the plasma protection against high-power microwaves was experimentally verified by using columnar plasma arrays generated by high-frequency glow discharge. Finally, the main problems to be solved for plasma-based high-power microwave protection technology were summarized.]]></description>
<pubDate>2024/11/27 0:00:00</pubDate>
<category><![CDATA[专栏：电子战]]></category>
<author><![CDATA[LI Zhigang,QIU Zhinan,WANG Jiachun,LIU Liping,WANG Junru,CHEN Zongsheng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Zhigang,QIU Zhinan,WANG Jiachun,LIU Liping,WANG Junru,CHEN Zongsheng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306011]]></guid><cfi:id>2</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Performance analysis of SMI based GNSS space-time adaptive processing under distributed intermittent interferences]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Considering the distributed intermittent interference threat faced by global navigation satellite system receiver, the anti-jamming performance of STAP(space-time adaptive processing) based on sample matrix inversion method was comprehensively and accurately analyzed. Based on the performance analysis model, according to the mismatch of sampling covariance matrix caused by intermittent interferences, the performance of STAP under different conditions was comprehensively analyzed through classification evaluation, combing induction and theoretical derivation. The analysis results show that when the sampling length is less than the scintillation period and the pre-sample method is used, the missed sampling of space-time adaptive processor will occur and the interference suppression performance will decrease sharply, and the frequency of missed sampling is the sum of the scintillation frequencies of each interference. Numerical and simulation analyses verify the results of analysis, and based on this, the optimal design of STAP in the face of distributed intermittent interference is discussed.]]></description>
<pubDate>2024/11/27 0:00:00</pubDate>
<category><![CDATA[专栏：电子战]]></category>
<author><![CDATA[WANG Jie,LIU Wenxiang,CHEN Feiqiang,OU Gang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Jie,LIU Wenxiang,CHEN Feiqiang,OU Gang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202306012]]></guid><cfi:id>1</cfi:id><cfi:read>true</cfi:read></item>
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