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2021 2nd China International SAR Symposium (CISS)最新文献

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Design of Dual-polarization Slotted Waveguide Antenna for Polarimetric SAR 为极坐标合成孔径雷达设计双极化开槽波导天线
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/CISS51089.2021.9652386
Yanbing Ma, Shangrong Ouyang, Xing Su, Yuhuan Zhang, Hong Wang, Shaojie Huang
{"title":"Design of Dual-polarization Slotted Waveguide Antenna for Polarimetric SAR","authors":"Yanbing Ma, Shangrong Ouyang, Xing Su, Yuhuan Zhang, Hong Wang, Shaojie Huang","doi":"10.23919/CISS51089.2021.9652386","DOIUrl":"https://doi.org/10.23919/CISS51089.2021.9652386","url":null,"abstract":"A dual-polarization phased array antenna for fully polarized SAR is designed in this paper. The antenna adopts slotted waveguide structure, which is composed of horizontal and vertical linear polarization elements. The 3dB beam width of the antenna in azimuth and range direction is 0.9° *0.28° respectively and it has a scanning capability of ±2.3°* ± 23° . In order to reduce the number of TR channels, a large spacing design is adopted in azimuth direction, and the irregular staggered arrangement of sub-arrays is optimized to suppress the resulting scanning grating lobe.","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127772775","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
Joint Matched Filtering and Iterative Optimization Network for 3-D mmW Imaging 三维毫米波成像联合匹配滤波与迭代优化网络
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/CISS51089.2021.9652352
Mou Wang, Daojin Chen, Xue-Dian Zhang, Shunjun Wei, Jun Shi, Xiaoling Zhang
{"title":"Joint Matched Filtering and Iterative Optimization Network for 3-D mmW Imaging","authors":"Mou Wang, Daojin Chen, Xue-Dian Zhang, Shunjun Wei, Jun Shi, Xiaoling Zhang","doi":"10.23919/CISS51089.2021.9652352","DOIUrl":"https://doi.org/10.23919/CISS51089.2021.9652352","url":null,"abstract":"Compressed sensing (CS) shows significant potential to improve image quality in 3-D millimeter wave (mmW) imaging. Limited by huge computational cost, it always hard to apply conventional linear measurement-model-based imaging method for extended-scene reconstruction. In this paper, we present a joint Matched Filtering (MF) and Iterative Optimization network for 3-D mmW imaging, which is dubbed as MFIST-Net. First, the Matched Filtering kernels are introduced in IST optimization steps in lieu of measurement matrices, by which the large-scale matrix-vector operations in conventional linear measurement model are avoided and the computational efficiency is improved. Second, the modified IST is unfolded into a deep iterative architecture, and the parameters of MFIST-Net is learned from 1000 simulated data samples by end-to-end training. The well-trained model is capable to produce large-scale 3-D images of the illuminated targets from sparsely sampled echoes. Besides, numerical and visual results validate the proposed MFIST-Net achieve both favorable reconstruction accuracy and high execution time compared with MF, RMA, and ISTA algorithms.","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130486722","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
Improved precise tomography- and aperture-dependent compensation for Synthetic Aperture Radar 改进的合成孔径雷达精确层析成像和孔径相关补偿
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/CISS51089.2021.9652353
Q. Lu, K. Du, Qingqing Li, Bingqi Zhu, Wenming Tang, Xiangzhen Yu
{"title":"Improved precise tomography- and aperture-dependent compensation for Synthetic Aperture Radar","authors":"Q. Lu, K. Du, Qingqing Li, Bingqi Zhu, Wenming Tang, Xiangzhen Yu","doi":"10.23919/CISS51089.2021.9652353","DOIUrl":"https://doi.org/10.23919/CISS51089.2021.9652353","url":null,"abstract":"Due to the presence of atmosphere turbulence and the instability of airplane platform, deviations arise between the real track and the nominal one during synthetic aperture radar (SAR) data collection, which are referred to as motion errors. As for most known approaches (for example, precise tomography-and aperture-dependent algorithm), a reference range bin and reference azimuth time are assumed to perform the bulk rangeand azimuth-invariant compensation, leaving the range spreads and residual azimuth phase errors that impact the geometric fidelity of the final image. In this paper, a new fashion, entitled modified precise tomography- and aperture-dependent (MPTA), is proposed to make the complete corrections of the space-variant motion errors compensation. For the arbitrary residual motion errors and unsolved closed form of Doppler frequency-time relation, the numerical computation is developed along azimuth direction. Finally, we would present numerical experimental results characterizing the performance of the proposed MPTA.","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129836295","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
Target feature extraction algorithm for SAR images of complex background based on corner estimation 基于角点估计的复杂背景SAR图像目标特征提取算法
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/CISS51089.2021.9652285
Yong Huang, Zhuo-qun Wang, Zhicheng Wang, Yue Zheng, Meijing Jiao
{"title":"Target feature extraction algorithm for SAR images of complex background based on corner estimation","authors":"Yong Huang, Zhuo-qun Wang, Zhicheng Wang, Yue Zheng, Meijing Jiao","doi":"10.23919/CISS51089.2021.9652285","DOIUrl":"https://doi.org/10.23919/CISS51089.2021.9652285","url":null,"abstract":"Aiming at the problem that the Synthetic Aperture Radar (SAR) image is difficult to target detection for the speckle noise, this paper proposes a SAR image target feature extraction method based on the corner information estimation. Firstly, the image is preprocessed by spatial filtering technique. Then the target detection algorithm based on pulse coupled neural network (PCNN) is used to detect the target of SAR image, and the target in the image is better detected. Finally, through Harris operator extracts the target corner point and performs a least squares estimation to obtain the target corner size. The simulation results show that compared with the traditional angle estimation algorithm, the proposed SAR image feature extraction algorithm based on the rotation angle estimation has higher precision and less error.","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"475 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128720695","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: 2
CISS 2021 Author Index CISS 2021作者索引
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/ciss51089.2021.9652251
{"title":"CISS 2021 Author Index","authors":"","doi":"10.23919/ciss51089.2021.9652251","DOIUrl":"https://doi.org/10.23919/ciss51089.2021.9652251","url":null,"abstract":"","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123738071","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
Structure Design and Thermal Deformation Simulation of Spaceborne SAR Antenna 星载SAR天线结构设计与热变形仿真
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/CISS51089.2021.9652209
Xing Su, L. Dongying, Sheng Ye, Yanbing Ma, Zhi Cui, Shangrong Ouyang
{"title":"Structure Design and Thermal Deformation Simulation of Spaceborne SAR Antenna","authors":"Xing Su, L. Dongying, Sheng Ye, Yanbing Ma, Zhi Cui, Shangrong Ouyang","doi":"10.23919/CISS51089.2021.9652209","DOIUrl":"https://doi.org/10.23919/CISS51089.2021.9652209","url":null,"abstract":"Spaceborne synthetic aperture radar (SAR) is an active microwave imaging equipment and has play a key role in many fields such as target dynamic monitoring and 3D mapping, due to its unique advantage of observing in all time and all-weather. In this paper, a structure design and thermal deformation analysis of a large spaceborne millimeter wave phased array SAR antenna is prescribed. The total heat per unit time generated by the antenna, whose size is about 590λ0×56λ0 (λ0 is the wavelength in free space), is as high as 19000W. In order to alleviate the thermal deformation of antenna array, which may deteriorates seriously the flatness of the antenna, a study is conducted first to analysis the thermal deformation under high and low temperature conditions, based on which, a partial constraint released method was then adopted for the structure design of the antenna array. The simulation shows that the thermal deformation of the antenna array using partial constraint released method is effectively reduced compared with the one without using it, which is of significance for the electrical performance of the antenna array working on orbit.","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116680416","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 Reliable Spaceborne SAR Real-time Processing Platform 高可靠星载SAR实时处理平台设计
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/CISS51089.2021.9652290
Qingbo Liu, Fengjiao Wang, Hu Yu, Hongzhi Li, Jianhua Zhao
{"title":"Design of High Reliable Spaceborne SAR Real-time Processing Platform","authors":"Qingbo Liu, Fengjiao Wang, Hu Yu, Hongzhi Li, Jianhua Zhao","doi":"10.23919/CISS51089.2021.9652290","DOIUrl":"https://doi.org/10.23919/CISS51089.2021.9652290","url":null,"abstract":"We propose a high reliable spaceborne SAR real-time processing platform. By means of dual redundant high speed data interface, platform can realize real-time interaction with payload by 2-channel 10Gbps or parallel 20Gbps. Two high performance processors on board can realize floating point processing by 2-channel 0.8TFLOPS or parallel 1.6TFLOPS. Onboard TTE end nodes can be synchronized with any other module with accuracy better than 1us. The reliability design provides high reliable hardware solution for real-time data processing of spaceborne SAR system. Based on the processing platform, the SAR image of a civil airport is processed, and the SAR image with clear outline and obvious characteristics is obtained. The processing ability is more than 5 times higher than that of the ordinary processing platform.","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117170051","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 Photonic-Based Self-Interference Cancellation Approach for Continuous-Wave Radar Systems 一种基于光子的连续波雷达自干扰消除方法
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/CISS51089.2021.9652265
Moxuan Han, Qingbo Liu, Lizhong Jiang, Yong Huang, Taixia Shi, Yang Chen
{"title":"A Photonic-Based Self-Interference Cancellation Approach for Continuous-Wave Radar Systems","authors":"Moxuan Han, Qingbo Liu, Lizhong Jiang, Yong Huang, Taixia Shi, Yang Chen","doi":"10.23919/CISS51089.2021.9652265","DOIUrl":"https://doi.org/10.23919/CISS51089.2021.9652265","url":null,"abstract":"A photonic-based self-interference cancellation (SIC) method for the continuous-wave radar is proposed based on a dual-polarization quadrature phase-shift keying (DP-QPSK) modulator. The upper dual-parallel Mach-Zehnder modulator (DP-MZM) in the DP-QPSK modulator is biased as a carrier-suppressed single-sideband (CS-SSB) modulator to modulate the received signal, which includes both the useful echo signal reflected by the target and the self-interference signal from the transmitting antenna. The lower DP-MZM in the DP-QPSK modulator is also biased as a CS-SSB modulator, where the reference signal is modulated after amplitude and delay adjustments. After the two optical signals are coupled in a polarizer, the reference signal and the self-interference signal cancel each other in the optical domain. By properly controlling the carrier suppression of the upper modulator, the coupled optical signal consists of one first-order optical sideband and an optical carrier, so the useful echo signal without self-interference can be recovered by photodetection. Simulation results show that the proposed SIC system can effectively suppress the self-interference signal. System parameters that affect the SIC are further verified and studied by simulation.","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124956621","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
Design of an X-band T/R module with high power 设计高功率 X 波段 T/R 模块
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/CISS51089.2021.9652286
Yi Zhao, Bin Sun, Jianhua Xu
{"title":"Design of an X-band T/R module with high power","authors":"Yi Zhao, Bin Sun, Jianhua Xu","doi":"10.23919/CISS51089.2021.9652286","DOIUrl":"https://doi.org/10.23919/CISS51089.2021.9652286","url":null,"abstract":"With the development of radar technology, the technology of microwave monolithic integrated circuit is becoming more and more mature. Miniaturized, lightweight, multifunctional millimeter wave radar has been deeply studied and applied at home and abroad. T/R module is the core component of active phased array radar. A high-power T/R component of x-band with four-channels has been studied and designed in this paper. In this paper, a suitable chip carrier is selected to solve the heat dissipation problem caused by the high-power chip through the establishment of heat dissipation model. By embedding the microwave transmission signal in the inner layer, the self-excitation risk is reduced. The partition wall is introduced between the multi-function chip and the driving amplifier or between the driving amplifier and the power amplifier, and the self-excitation problem of the transmitting link is solved.","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129722667","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
Thermal-Mechanical Optimization of Electronic Combination Shell 电子组合壳的热-力学优化
2021 2nd China International SAR Symposium (CISS) Pub Date : 2021-11-03 DOI: 10.23919/CISS51089.2021.9652316
Yanling Wang, Le Zhang, Chunyue Zhuang, Fayang Zhang, Haitao Huang
{"title":"Thermal-Mechanical Optimization of Electronic Combination Shell","authors":"Yanling Wang, Le Zhang, Chunyue Zhuang, Fayang Zhang, Haitao Huang","doi":"10.23919/CISS51089.2021.9652316","DOIUrl":"https://doi.org/10.23919/CISS51089.2021.9652316","url":null,"abstract":"The topology optimization technology of electronic combination shell heat dissipation structure is studied. Under the constraint of the constant weight of the electronic combination shell, considering the thermal-mechanical properties comprehensively ,the structure topology of the shell is optimized by adding ribs and adjusting the size of the shell section. The thermal and mechanical simulation results show that the mechanical and heat dissipation properties of the optimized shell are effectively improved.","PeriodicalId":318218,"journal":{"name":"2021 2nd China International SAR Symposium (CISS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128668512","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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