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2022 3rd China International SAR Symposium (CISS)最新文献

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An Improved YOLO-v3Algorithm for Ship Detection in SAR Image Based on K-means++ with Focal Loss 基于k -means++的SAR图像船舶检测改进yolo -v3算法
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971239
Haonan Wang, Baolong Wu, Yanni Wu, Shuang-xi Zhang, Shaohui Mei, Yanyang Liu
{"title":"An Improved YOLO-v3Algorithm for Ship Detection in SAR Image Based on K-means++ with Focal Loss","authors":"Haonan Wang, Baolong Wu, Yanni Wu, Shuang-xi Zhang, Shaohui Mei, Yanyang Liu","doi":"10.1109/CISS57580.2022.9971239","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971239","url":null,"abstract":"In recent years, practical industrial production application have put forward extremely high requirements for its detection accuracy and detection efficiency in the aspect of synthetic aperture radar (SAR) image ship detection. Among the solutions to this problem, the YOLO has received more and more attention due to its advantages such as high speed. In this paper, the K-means++ is used to obtain the Anchor Box, the Focal loss is introduced to balance the proportion of positive and negative samples, and an improved image detection algorithm based on YOLO-v3 is proposed to solve the low detection efficiency and detection accuracy of ship images. The experimental results show that the improved algorithm in this paper can get rid of the local optimum well, shorten the convergence time, improve the training efficiency and the accuracy of ship image detection.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132091327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SAR Power Controller Design Research Based On PID Neural Network Artificial Intelligence and CPSO Algorithm 基于PID神经网络、人工智能和CPSO算法的SAR功率控制器设计研究
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971339
Piao Haiguo, Bai Lipeng, Ming Hengchao, Wang Yongkang, Cao Cheng
{"title":"SAR Power Controller Design Research Based On PID Neural Network Artificial Intelligence and CPSO Algorithm","authors":"Piao Haiguo, Bai Lipeng, Ming Hengchao, Wang Yongkang, Cao Cheng","doi":"10.1109/CISS57580.2022.9971339","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971339","url":null,"abstract":"The $S^{4}R$ Switch topology technology is used in SAR satellite power system which has nonlinear characteristics, and difficult to establish an accurate mathematical model for designing a satisfied controller. In this paper, developed an artificial intelligence design method based the Dynamic P-I-D Neurons Identification Model (DPIDNIM) and nonlinear auto regressive moving average (NARMA-L2) model. In order to verify the design method’s feasibility, used a typical non-linear time series named Mackey-Glass (MG) time series to confirm the accuracy and effective of the identification model. Then a cooperated-PSO-based PID neural network control strategy (PIDNNC) is given out. Research results indicate DPIDNIM-CPSO-Based Artificial Intelligence design method adapts to design a controller for SAR satellite power system","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128797867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-calibration method for Amplitude and Phase Error of MIMO system MIMO系统幅相误差的自校正方法
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971309
Guoying Dong, Jiatao Lin, Mingqi Li, Yan Zhang, Tengfei Li
{"title":"Self-calibration method for Amplitude and Phase Error of MIMO system","authors":"Guoying Dong, Jiatao Lin, Mingqi Li, Yan Zhang, Tengfei Li","doi":"10.1109/CISS57580.2022.9971309","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971309","url":null,"abstract":"In intermediate frequency multiple input multiple output communication system based on AD9361, due to the random phase difference of local oscillator locking between multiple chips, as well as filtering, analog to digital/digital to analog conversion and other processing, there are amplitude and phase errors between multiple channels. To solve this problem, self-calibration method of transceiver channels is introduced. By selecting sampling data sequence and performing fast Fourier transform calculation, this method can conveniently and quickly realize the automatic calibration of amplitude and phase errors between channels, with high calibration accuracy and good signal-to-noise ratio performance. Good consistency can be obtained between channels after calibration, so as to ensure the performance of following beam forming.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117232472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Ka-band Transition from E-plane Waveguide to H-plane Waveguide 从e面波导到h面波导的ka波段跃迁
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971351
Yafei Shen, Zhongyu Hu, Yuying Wu, Shihao Ma, Xiaojing Fan, Kai Chen
{"title":"A Ka-band Transition from E-plane Waveguide to H-plane Waveguide","authors":"Yafei Shen, Zhongyu Hu, Yuying Wu, Shihao Ma, Xiaojing Fan, Kai Chen","doi":"10.1109/CISS57580.2022.9971351","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971351","url":null,"abstract":"In this paper, A compact rectangular waveguide with 90° twist is proposed. The E-plane and H-plane waveguides are connected to a square waveguide in series. The cross-section of the square waveguide has the shape of a square with two diagonally corners cuts. It provides a 90°output polarization rotation to realize the transition from E-plane waveguide to H-plane waveguide. The advantages of this structure are the reduction of dimensions and the facilitation of fabrication. This paper presents a mechanically machined compact waveguide twist in the Ka-band. Measurements of a WR-28 twist exhibit a return loss near 20dB and an insertion loss of 0.6dB from 28GHz to 35GHz. The experimental data are in good agreement with the predicted results.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115345058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and Experiment of Airborne Video SAR Beam Steering 机载视频SAR波束控制系统的设计与实验
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971191
Shuo Wang, Zhaokai Pan, Zhiqiang Sun, Yue Pang
{"title":"Design and Experiment of Airborne Video SAR Beam Steering","authors":"Shuo Wang, Zhaokai Pan, Zhiqiang Sun, Yue Pang","doi":"10.1109/CISS57580.2022.9971191","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971191","url":null,"abstract":"As a new microwave remote sensing system, Video Synthetic Aperture Radar (SAR) can continuously monitor regional dynamic targets and realize the recognition and tracking of moving targets in the scene. This paper first introduces the working principle of the video SAR beam steering system from three aspects: the principle of the video SAR system, the principle of the video SAR beam steering system, and the principle of the antenna beam steering phase matching. On this basis, the design scheme of the video SAR beam steering system is given, and the design method of the video SAR mode beam steering based on the distributed beam steering system architecture and FPGA+DSP real-time beam steering calculation control is proposed. Finally, the test verification and typical test results are given, The research results have certain guiding significance for the mode design of airborne video SAR.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114322837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on Photovoltaic Cells for Laser Light on wireless energy transmission 激光光电池无线能量传输研究
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971291
Wang Xin, Li Bin, Sun Li-Jie, Shi Xianglei, Wang Xun-chun
{"title":"Research on Photovoltaic Cells for Laser Light on wireless energy transmission","authors":"Wang Xin, Li Bin, Sun Li-Jie, Shi Xianglei, Wang Xun-chun","doi":"10.1109/CISS57580.2022.9971291","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971291","url":null,"abstract":"Photovoltaic cells generating electricity by laser can be used to transmit power by light instead of electricity, which can guarantee the energy supply of SAR satellites under special working conditions. This paper studied high efficiency and high open voltage three-junction GaAs laser cells. Cell's window layer, emission region, grid line and antireflection were adjusted to reduce the surface recombination rate and reflex, in order to increase the absorption rate and the current density. Broadband gap AlGaAs/GaInP tunnel junction was designed to adapt the characteristics of the laser and solve the match problem of sub-cell. The IV curve of the laser photovoltaic cell was tested under 808nm laser irradiation. The open-circuit voltage and conversion efficiency are 3.25V and 53.6% under 0.67W/cm2 light intensity. Through research on new multi-junction laser photovoltaic cells, SAR satellites and other spacecrafts have more options for their energy supply when solar arrays don't work.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115751470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
WiFi perception of human gestures based on multi-dimensional association method research 基于多维关联方法的WiFi感知人类手势研究
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971167
Zhiquan Tang, Yicheng Jiang, Yun Zhang, Jin Wei
{"title":"WiFi perception of human gestures based on multi-dimensional association method research","authors":"Zhiquan Tang, Yicheng Jiang, Yun Zhang, Jin Wei","doi":"10.1109/CISS57580.2022.9971167","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971167","url":null,"abstract":"This paper studies the WiFi perception in indoor perception, studies the human gesture tracking system based on channel state information (CSI), and researches the CSI quotient model, static component elimination algorithm, and gesture tracking algorithm to realize human gesture perception based on WiFi. Through the derivation of the channel state information, it is found that the phase information contains the distance, speed, orientation, and other information of the target, which confirms the feasibility of WiFi sensing. Aiming at the core problem of how to extract the target information from the channel state information, this paper pays attention to the disturbance of the phase information caused by non-coherent noise and multipath clutter, uses the CSI quotient model for denoising, and constructs a static component elimination algorithm to remove the clutter, and the effect is remarkable. Finally, a gesture tracking algorithm based on a complex plane phase is constructed, and an actual system is built for verification. The results show that the system is capable of drawing figures, letters, and other figures by gestures.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115761479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An antenna beam control method of spaceborne multi-mode imaging SAR based on real-time computing framework 基于实时计算框架的星载多模成像SAR天线波束控制方法
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971371
Cheng Qian, Zelong Shao, Xiaolong Si, Hao Wang, Chao Li, M. Xing
{"title":"An antenna beam control method of spaceborne multi-mode imaging SAR based on real-time computing framework","authors":"Cheng Qian, Zelong Shao, Xiaolong Si, Hao Wang, Chao Li, M. Xing","doi":"10.1109/CISS57580.2022.9971371","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971371","url":null,"abstract":"Since the United States launched the first synthetic aperture radar satellite in 1978, it has attracted widespread attention because of its ability to obtain high-resolution images of almost every corner of the earth, all day, all weather, and regardless of national borders and politics. At present, spaceborne SAR has been widely used in civil and military applications. With the complexity of spaceborne SAR application scenarios, different imaging widths and imaging resolutions are required to deal with different imaging scenarios, imaging targets, and imaging tasks. For different imaging requirements, different imaging algorithms have been proposed, including strip imaging mode, spotlight imaging mode, scan imaging mode, etc. It is of great significance to integrate multiple imaging modes in a spaceborne SAR. Different imaging modes have different requirements for antenna beam pointing. And each imaging mode has the need to quickly switch beam pointing. The phased array antenna can realize the switching of beam pointing with different beam control codes, and the speed of beam direction switching depends on the calculation speed of beam control code. Therefore, the calculation strategy and the calculation speed of the beam control code have become the main problems which restricting the multi-mode imaging of spaceborne SAR. In this paper, a real-time antenna beam control method based on the computing framework of DSP, FPGA and CPU is proposed. According to different imaging modes, the corresponding beam control code calculation strategy is designed. The test results show that relying on the high-performance computing power of DSP and the logic control capabilities of FPGA and CPU, it perfectly meets the needs of quickly completing beam control code calculation to realize beam pointing switching in different imaging modes. This method makes it possible to realize multimode imaging of spaceborne SAR.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114824573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An Improved Space-Time Coding Scheme for FMCW MIMO-SAR 一种改进的FMCW MIMO-SAR空时编码方案
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971381
Ying Sun, Sili Wu, Xiang Chen, Hui Wang, Muhui Cai
{"title":"An Improved Space-Time Coding Scheme for FMCW MIMO-SAR","authors":"Ying Sun, Sili Wu, Xiang Chen, Hui Wang, Muhui Cai","doi":"10.1109/CISS57580.2022.9971381","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971381","url":null,"abstract":"Multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) system, as a new SAR system, is expected to improve the performance of interferometric applications, ground moving target indication, wide-swath imaging, and three-dimensional imaging. Effective orthogonal waveform design and echo separation scheme are the key issues in the realization of MIMO-SAR system. Otherwise, the residual ambiguous energy introduced by incomplete separation will degrade the quality of SAR images. However, most schemes are designed for pulsed SAR systems, which are not necessarily compatible with continuous wave systems. This paper proposes an improved space-time coding scheme for FMCW MIMO-SAR, which avoids the performance degradation associated with the time-variant channel responses caused by the motion of the SAR platform. The echo separation performance of the proposed scheme is evaluated and compared with the conventional scheme through simulation experiments.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128061030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design of High Isolation Waveguide Switch Component in Ka Band for SAR System SAR系统Ka波段高隔离波导开关元件的设计
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971433
Yuhuan Zhang, Shangrong Ouyang, Yuchen Zhang, Xing Su, Quanjin Kuang
{"title":"Design of High Isolation Waveguide Switch Component in Ka Band for SAR System","authors":"Yuhuan Zhang, Shangrong Ouyang, Yuchen Zhang, Xing Su, Quanjin Kuang","doi":"10.1109/CISS57580.2022.9971433","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971433","url":null,"abstract":"A design of waveguide switch component in Ka band for SAR system is proposed in this paper, which can realize the function of switching between main/backup channels and several operating modes of SAR system. The microwave performance of the waveguide switch is improved by adapting the choke ring in the circumferential direction and the polarization choke in the axial direction. Through the combination of six waveguide switches, the isolation level between channels is promoted in the whole band. The electromagnetic analysis of the waveguide switch model is carried out by using the full-wave simulation, and its merit of VSWR less than 1.30, insertion loss less than 0.8 dB and isolation level better than 85 dB are verified by physical test.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127195514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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