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

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An Interference Suppression Method For Spaceborne Sar Image Via Space-Channel Attention Network 基于空间信道注意网络的星载Sar图像干扰抑制方法
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971438
Hao Zhang, Shunjun Wei, Mou Wang, Jun Shi
{"title":"An Interference Suppression Method For Spaceborne Sar Image Via Space-Channel Attention Network","authors":"Hao Zhang, Shunjun Wei, Mou Wang, Jun Shi","doi":"10.1109/CISS57580.2022.9971438","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971438","url":null,"abstract":"Spaceborne synthetic aperture radar (SAR) is becoming a widely used sensor in the universe because of its ability to acquire high-resolution radar images under harsh conditions such as clouds, fog, rain, and snow. However, the presence of electromagnetic interference in cosmic space can seriously affect the efficiency of information detection of spaceborne SAR. To address the problem of degradation of spaceborne SAR images, we present the Space-Channel Attention Network (SCANet). Our model structure consists of two branches, the channel and spatial transform branch (CSTB) and the detail restoration branch (DRB). Among them, CSTB, with attention mechanisms in both channel and spatial dimensions, greatly preserves the texture features of the original images while eliminating interference. In addition, DRB recovers precise details of CSTB output feature maps guided by ground truth. We have verified the feasibility of the method by adopting real Sentinel-I data. Compared with some denoising algorithms in field of computer vision, Our method attains the best interference suppression performance with high-resolution image output.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"21 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":"115401809","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
Terrain Observation Using Ground-based Interferometric Millimeter-wave SAR Imaging 基于地面干涉毫米波SAR成像的地形观测
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971207
Meng Jiang, Hongjun Wei, Chuheng Tang, Hui Zhang, Gang Xu
{"title":"Terrain Observation Using Ground-based Interferometric Millimeter-wave SAR Imaging","authors":"Meng Jiang, Hongjun Wei, Chuheng Tang, Hui Zhang, Gang Xu","doi":"10.1109/CISS57580.2022.9971207","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971207","url":null,"abstract":"Synthetic aperture radar (SAR) has been widely applied to terrain observation as an enhanced sensor for all-weather and all-day functions. In this paper, a ground-based millimeter-wave multi-channel interferometric SAR (InSAR) system design and high-resolution imaging algorithm are proposed, which is characterized by small-size, low-cost, and high-precision. Firstly, the frequency-domain imaging algorithm of chirp-scaling is adopted to realize the range cell migration correction (RCMC) and two-dimensional focusing. Then, multi-channel interferometric processing is used to obtain the angle estimation of the imaging scene. Finally, experiments using measured data are performed to confirm the effectiveness of ground-based SAR imaging for terrain observation.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"235 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":"121066978","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 RCS calculation and weight loss method of radar angle reflector 雷达角反射器RCS计算及减重方法研究
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971366
J. Gu, F. Dai, Qiping Chen, D. Gu, Yi Liao, Biao Wang
{"title":"Research on RCS calculation and weight loss method of radar angle reflector","authors":"J. Gu, F. Dai, Qiping Chen, D. Gu, Yi Liao, Biao Wang","doi":"10.1109/CISS57580.2022.9971366","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971366","url":null,"abstract":"In this paper, based on physical optics (PO) and geometrical optics, a new high frequency hybrid method-region projection/ physical optics (AP/PO) method is derived by using region projection (AP) method. The calculated results are in good agreement with the test results, which proves the correctness and validity of the model. At the same time, a weight reduction method suitable for radar target RCS angular reflection intensifier is proposed, that is, the angular reflection intensifier can reduce the weight of the angular reflection intensifier by more than 40% under the condition that the RCS enhancement effect of the intensifier is almost unchanged.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"71 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":"127164417","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
A General Purpose SAR Satellite Power Distribution Test System 通用SAR卫星功率分配测试系统
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971408
Xu Zhang, Yijin Chuai, Chengcheng Zhu, Jiayao Jin, Chen Zhang
{"title":"A General Purpose SAR Satellite Power Distribution Test System","authors":"Xu Zhang, Yijin Chuai, Chengcheng Zhu, Jiayao Jin, Chen Zhang","doi":"10.1109/CISS57580.2022.9971408","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971408","url":null,"abstract":"In view of the increasing demand for power distribution of SAR satellite power controller, the number of distribution circuits has increased significantly, and the difference of power distribution between single circuits is large. The traditional test equipment is failing to meet the test demand for new power controller. The general purpose SAR satellite power distribution test system can realize the simultaneous testing for multiple and differentiated distribution loads. By mean of components matching, the system can fulfill requirements of power distribution test for different models. The general purpose test system can highly improve the testing efficiency with fewer personnel as while as equipment occupancy, improve the reliability for product testing, and reduce testing risks. It is supposed to have high application value.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"79 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":"123237084","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
InSAR complex image registration based on correlation function method 基于相关函数法的InSAR复合图像配准
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971402
Yeke Tang, Jinyi Zhang, Zhihang Chen, Zhaoyang Zeng, Sili Wu, Hui Wang
{"title":"InSAR complex image registration based on correlation function method","authors":"Yeke Tang, Jinyi Zhang, Zhihang Chen, Zhaoyang Zeng, Sili Wu, Hui Wang","doi":"10.1109/CISS57580.2022.9971402","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971402","url":null,"abstract":"InSAR technology is to extract the surface deformation and DEM elevation information from the phase difference and spatial distance difference of complex data obtained by SAR observation of the same ground object twice. SAR complex image registration is a key step in interferometric SAR data processing. Because SAR data is complex and has the characteristics of high speckle noise, SAR image registration is far more difficult than optical image registration. In order to obtain high quality phase information, the registration accuracy between image pairs needs to reach sub-pixel level. InSAR complex image registration algorithm based on correlation function method is adopted in this paper. Correlation function is a robust and universal measure function for interferometric SAR image registration. According to the real and complex correlation calculation of correlation functions, the adaptation of real and complex correlation functions was analyzed, and the registration sensitivity and coherence coefficient were calculated. For the real SAR data of complex crater, the experimental results show that the algorithm has good performance and can effectively improve the registration accuracy.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"2000 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":"123754794","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 Internal Calibration Method for SAR with T-R Community Antenna System T-R小区天线系统SAR内定标方法研究
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971290
Lipeng Fu, Hui Wang, Shichao Zheng, Sheng Ye, Jiahe Mei, Xiang Chen
{"title":"Research on Internal Calibration Method for SAR with T-R Community Antenna System","authors":"Lipeng Fu, Hui Wang, Shichao Zheng, Sheng Ye, Jiahe Mei, Xiang Chen","doi":"10.1109/CISS57580.2022.9971290","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971290","url":null,"abstract":"Compared to SAR system with T-R separate antenna, the SAR system with T-R community antenna uses only one phased array antenna to realize both transmitting and receiving, which reduces the number of phased array antenna as well as the size and weight of the whole system. However, it is quite complex to realize internal calibration for SAR with T-R community antenna system, as the process of internal calibration requires other modules, units or subsystems to work cooperatively. In this paper, the method and theory of internal calibration are proposed for a SAR system with T-R community antenna. The comprising of the internal calibration unit, calibration modes and the realization of calibrating links are described, proving that the presented internal calibration approach for SAR with T-R community antenna is feasible theoretically.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"25 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":"115594717","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
A High-resolution Image Reconstruction Technology Based on G-matrix and Fourier Transform 基于g矩阵和傅里叶变换的高分辨率图像重建技术
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971364
Siyuan Du, F. Zhao, Jiakai He, Xiong Chen, Lifei Jiang
{"title":"A High-resolution Image Reconstruction Technology Based on G-matrix and Fourier Transform","authors":"Siyuan Du, F. Zhao, Jiakai He, Xiong Chen, Lifei Jiang","doi":"10.1109/CISS57580.2022.9971364","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971364","url":null,"abstract":"Since solving the inversion equation of synthetic aperture image reconstruction is an ill-posed mathematical problem, in order to meet the needs of high-precision reconstruction of scene brightness temperature images during ground detection, the mechanism analysis and algorithm research of high-resolution brightness temperature reconstruction is carried out. In this paper, various resolution-enhanced inversion algorithms such as statistical inversion are analyzed, and the synthetic aperture response is classified. The direct-current (DC) component of the synthetic aperture response is processed by regularized G matrix inversion, and the alternating (AC) component of the synthetic aperture is processed by Fourier inversion, which reduces the bandwidth of the point spread function, solves the problem of sensitivity deterioration when the resolution is increased, and improves the image quality and result correlation, enabling high-resolution image reconstruction. The overall research is verified by numerical calculation of the standard mean error and root mean square error of synthetic aperture inversion brightness temperature image.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"33 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":"122597612","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
A Novel Long-time Coherent Integration Method for Highly Maneuverable Target Based on Three-Dimension Parameter Space 一种基于三维参数空间的高机动目标长时间相干积分方法
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971211
Yuchao Yang, Gang Fang
{"title":"A Novel Long-time Coherent Integration Method for Highly Maneuverable Target Based on Three-Dimension Parameter Space","authors":"Yuchao Yang, Gang Fang","doi":"10.1109/CISS57580.2022.9971211","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971211","url":null,"abstract":"Radar detection of maneuvering target with complex motions usually results in severe deterioration of performance because of the issues of range migration (RM) and Doppler frequency migration (DFM) within a coherent processing interval. To solve these problems, this paper proposes a novel method without brute-force multi-dimension search procedure. Specifically, the method first develops a parametric minimum entropy optimization model to estimate the fold factor. Then, a bilinear autocorrelation function (BAF) is performed to map the signal to a three-dimension parameter space. Afterwards, scaled Fourier transform (SFT), scaled inverse Fourier transform (SIFT) and Fourier transform (FT) are utilized to complete the signal refocusing. With the estimated parameters, the corresponding phase compensation function can be constructed to eliminate the high-order phase terms and obtain the energy coherent integration. Numerical simulations demonstrate that the proposed method can achieve excellent balance between computational complexity and detection performance.","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":"122600364","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-precision Airborne SAR Stabilization Platform Based on Active Disturbance Rejection Technology 基于自抗扰技术的高精度机载SAR稳定平台设计
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971424
Minghan Zhao, Junshan Chen, G. Zhao, Lu Zhou, Xiajing Li
{"title":"Design of High-precision Airborne SAR Stabilization Platform Based on Active Disturbance Rejection Technology","authors":"Minghan Zhao, Junshan Chen, G. Zhao, Lu Zhou, Xiajing Li","doi":"10.1109/CISS57580.2022.9971424","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971424","url":null,"abstract":"An antenna stabilization platform based on active disturbance rejection (ADRC) technology is designed to compensate for the motion disturbance caused by the movement of the antenna beam pointing at the carrier aircraft in synthetic aperture radar (SAR) imaging. In this paper, the unavoidable friction disturbance torque in the stable platform and servo mechanism is analyzed, and the extended state observer is used to compensate for the disturbance torque so as to improve the pointing accuracy. The effectiveness of the algorithm is verified by digital simulation and semi-physical tests. The test results show that the airborne SAR stabilization platform designed with active disturbance rejection technology can effectively improve the pointing accuracy of the SAR antenna, and the performance is improved by more than 30%.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"4 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":"122073984","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
Analysis of Influencing Factors of Distributed Satellite InSAR Height-Measurement Accuracy based on Positioning Equation 基于定位方程的分布式卫星InSAR测高精度影响因素分析
2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971441
Ruifeng Lu, Junjian Wen, Di Zhao, Yanyang Liu, Yusheng Hou, Chonghua Chen
{"title":"Analysis of Influencing Factors of Distributed Satellite InSAR Height-Measurement Accuracy based on Positioning Equation","authors":"Ruifeng Lu, Junjian Wen, Di Zhao, Yanyang Liu, Yusheng Hou, Chonghua Chen","doi":"10.1109/CISS57580.2022.9971441","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971441","url":null,"abstract":"This paper analyzes the height-measurement accuracy of distributed satellite Interferometric Synthetic Aperture Radar (InSAR). According to the distributed satellite InSAR target positioning equation, the error factors affecting the height-measurement accuracy in the positioning equation are sorted out, and the transfer factors of each error factor affecting the height measurement accuracy are derived. The correctness of the theoretical analysis results is verified by the Mento Carlo test, and the influence of various error factors on the height-measurement accuracy is quantitatively analyzed. The analysis results show that the orbit determination error and slant range error of the Master satellite have an important impact on the absolute height accuracy, and have little impact on the relative height accuracy, but the baseline measurement error and interferometric phase error have a great impact on the absolute and relative height accuracy.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"8 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":"116621832","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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