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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·机械工程]]></title>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Reasearch progress and prospects of deep learning for visual speech generation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202402013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to further advance the development of visual speech learning, the task definition and research significance of visual speech generation was expounded and the difficulties and challenges were deeply analyzed in this field. Besides, the current status and development level of visual speech generation research was introduced, and the recent mainstream methods were sorted, classified and commented based on the difference of generation frameworks. At the end of the paper, the potential problems and possible research directions of visual speech generation were discussed.]]></description>
<pubDate>2024/4/7 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·机械工程]]></category>
<author><![CDATA[LIU Li, SUI Jinping, DING Ding, ZHAO Lingjun, KUANG Gangyao, SHENG Changchong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Li, SUI Jinping, DING Ding, ZHAO Lingjun, KUANG Gangyao, SHENG Changchong</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Joint design method of transmit-receive for transmit beamspace MIMO-STAP radar]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202402014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Joint design of transmit beamforming and receiving filter for airborne MIMO(multiple-input multiple-output) radar in the background of signal-dependent clutter was studied. Airborne MIMO radar transmit beamspace STAP(space-time adaptive processing) signal model was established. In order to ensure the target detection performance in clutter environment, the SINR(signal-to-interference-plus-noise ratio) was maximized and a new iterative optimization algorithm based on the MM(maximization-minimization) framework was designed to solve the joint design problem. By properly finding the lower bound of the objective function, the convergence speed of the proposed algorithm was effectively improved and the running time of the proposed algorithm was reduced. In addition, compared with the traditional phased array radar and MIMO radar, the optimized transmit beamforming and receive filter can significantly improve the output SINR. Simulation results demonstrate the effectiveness of the proposed method.]]></description>
<pubDate>2024/4/7 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·机械工程]]></category>
<author><![CDATA[LI Zhihui, PAN Jifei, ZHOU Qingsong, MAO Yunxiang, LIU Fangzheng, SHI Shujie]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Zhihui, PAN Jifei, ZHOU Qingsong, MAO Yunxiang, LIU Fangzheng, SHI Shujie</atom:name>
</atom:author>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Sensitive region of single-event transient in 22 nm FDSOI devices]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202402015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Based on 3D-TCAD simulations, the sensitivity region of SET(single-event transient) effect in 22 nm FDSOI (fully depleted silicon-on-insulator) devices were investigated. A comparison was made between the methods of using a single transistor and using an inverter to study the sensitivity region of device SET, in order to analyze the influence of heavy ion strike position on the SET sensitivity of 22 nm FDSOI devices in actual circuits, and to explain it from the perspective of charge collection mechanism. In depth analysis reveals that the parasitic bipolar amplification effect is sensitive to the position of heavy particle strike, which is the reason for the different sensitivity of SET in different regions of the device. The increased sensitivity of the drain caused by a constant voltage source connected to the drain of a single transistor is the reason why the SET sensitive area of the device in the single transistor and inverter is different. The research method of studying SET sensitive regions of the devices under FDSOI process was improved. The simulation result of inverter is more in line with the actual situation than single transistor, which will provide theoretical guidance for SET hardening.]]></description>
<pubDate>2024/4/7 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·机械工程]]></category>
<author><![CDATA[ZHANG Bohan, LIANG Bin, LIU Xiaonian, FANG Yahao]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Bohan, LIANG Bin, LIU Xiaonian, FANG Yahao</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202402015]]></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[Film cooling characteristics analysis of turbine blade tip in transonic flow]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202402016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[To grasp the film cooling characteristics of the turbine blade tip in transonic flow, the pressure sensitive paint technique was used to experimentally obtain the effects of the tip clearance gap and mass flow ratio on the film cooling performance of the blade tip. The results indicate that, under conditions of low mass flow ratio, increasing the tip clearance height effectively enhances the film coverage in the mid-chord region of the blade tip. However, when the mass flow ratio is high, changes in the tip clearance height have an insignificant effect on the distribution of film cooling efficiency in this region. Under conditions of small tip clearance heights, the cooling coverage in the mid-chord region deteriorates gradually as the mass flow ratio increases. In contrast, with larger tip clearance heights, an improvement in cooling coverage is only observed when the mass flow ratio increases from 0.1%+0.05% to 0.14%+0.07%.]]></description>
<pubDate>2024/4/7 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·机械工程]]></category>
<author><![CDATA[ZHANG Bolun, XIA Jun, HU Qigao, ZHU Huiren]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Bolun, XIA Jun, HU Qigao, ZHU Huiren</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202402016]]></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[Multi-scale decomposition based detail perception fusion algorithm for extreme exposure images]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202402017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the problem of the low dynamic range of extreme exposure images, such as underexposure and overexposure images, a detail perception image fusion algorithm based on multi-scale decomposition was proposed. After detail enhancement, the underexposed image was roughly fused with the overexposed image. Wavelet transform was used to perform multi-scale decomposition on the brightness component of the image after detail enhancement, and a special high-frequency and low-frequency fusion strategy was designed to realize the fine fusion of brightness components. The hue and saturation components of the coarse fusion image were recombined with the brightness components of the fine fusion image to obtain the final fusion result. Based on abundant testing data, the experimental results show that the visual effect of this method is excellent. The index of averaged MEF-SSIM is 0.985 4, and the index of averaged SSIM is 0.650 8, which are superior to the existing mainstream algorithms.]]></description>
<pubDate>2024/4/7 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·机械工程]]></category>
<author><![CDATA[ZHANG Junchao, HUANG Junbin, YANG Degui, LIANG Buge, CHEN Jianlai, ZHAO Dangjun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Junchao, HUANG Junbin, YANG Degui, LIANG Buge, CHEN Jianlai, ZHAO Dangjun</atom:name>
</atom:author>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Radar deception jamming detection method with digital radio frequency memory]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202402018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The transponder deception jamming with DRFM(digital radio frequency memory) is highly coherent with real radar echoes, which makes it difficult for radar to distinguish real radar echoes and jamming. To address this issue, a DRFM-based deception jamming detection method based on Hough transform was proposed. The jamming signal model based on linear frequency modulation was established and the spectrum of the jamming harmonics was analyzed subsequently. Then, the short-time Fourier transform and two-dimensional constant false alarm rate detector were used to extract the features of the jamming signal. The Hough transform was used to complete deception jamming detection. The proposed method is based on the characteristics of DRFM deception jamming itself, and does not depend on prior information and application scenario. Moreover, it has low computational complexity and good detection performance under the condition of low signal-to-noise. The effectiveness of the proposed method is verified through simulations.]]></description>
<pubDate>2024/4/7 0:00:00</pubDate>
<category><![CDATA[信息与通信工程·机械工程]]></category>
<author><![CDATA[ZHANG Shunsheng, CHEN Shuang, WANG Wenqin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Shunsheng, CHEN Shuang, WANG Wenqin</atom:name>
</atom:author>
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