2022 3rd China International SAR Symposium (CISS)最新文献_第8页

Coordinated Attitude Control of Satellite Formation Based on Directed Communication Topology 基于定向通信拓扑的卫星编队姿态协调控制

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971412

Wengfeng Hu, Xiumei Chen, Jiarui Pei, Han Chen, Siyan Guo

{"title":"Coordinated Attitude Control of Satellite Formation Based on Directed Communication Topology","authors":"Wengfeng Hu, Xiumei Chen, Jiarui Pei, Han Chen, Siyan Guo","doi":"10.1109/CISS57580.2022.9971412","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971412","url":null,"abstract":"The satellite formation is no longer limited by the physical structure of a single satellite, and the SAR payloads for transmitting and receiving signals can be placed on different formation members, thereby forming a configuration with a long baseline and a large aperture in space. The high precision, high stability and fast maneuverability of satellite formation attitude coordination control are the prerequisites to maintain this configuration. Based on the directed communication topology, this paper will study the satellite formation attitude cooperative control problem. Quaternions are used to describe the relative kinematics and dynamic equations of formation satellites. The application of algebraic graph theory in the communication of satellite formation members is studied, and the topological structure of directed communication among formation members is described based on this theoretical basis. Considering the state retention and formation retention of satellite formations at the same time, three sliding mode controllers are designed. Firstly, a sliding mode controller with a symbolic function control law is designed. The simulation results show that there is a severe jitter phenomenon under the influence of external disturbance torque. A saturated function sliding mode controller is further designed, and the high frequency jitter is effectively suppressed. Finally, in order to improve the rapid maneuverability of the formation satellites, a limited-time attitude cooperative controller is designed based on the fast terminal sliding mode theory, which significantly shortens the maneuvering time.","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":"125056914","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-performance Super-resolution Spaceborne SAR Real-time Imaging Chip 高性能超分辨率星载SAR实时成像芯片设计

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971430

Yongrui Li, Liang Chen, Fang Liu, Tingting Qiao, Ming Xu, Yizhuang Xie

{"title":"Design of High-performance Super-resolution Spaceborne SAR Real-time Imaging Chip","authors":"Yongrui Li, Liang Chen, Fang Liu, Tingting Qiao, Ming Xu, Yizhuang Xie","doi":"10.1109/CISS57580.2022.9971430","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971430","url":null,"abstract":"Aiming at the requirements of spaceborne SAR for high-performance and low-power onboard processors with ultra-high-precision real-time imaging capabilities, we propose a design method for a chip that is capable of high-performance super-resolution real-time imaging in this paper, which can solve the challenges of miniaturization and low power consumption in the current spaceborne processing system. Based on FFBP super-resolution imaging algorithm, the architecture of the spaceborne SAR chip and the high-performance processing engine on the chip are designed, and the structure of the super-resolution SAR real-time imaging parallel processing system is described. Based on the existing work, the chip’s resource consumption and real-time imaging performance are evaluated in a specific processing scenario. The analysis shows that the design of the ultra-high-resolution SAR imaging chip in this paper can greatly reduce the image acquisition time and effectively reduce the power consumption of the spaceborne SAR imaging system, which can provide a reference for the development of related chips.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"29 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":"126454136","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

Real-time Beam Optimization of Millimeter-Wave Array Radar Based on Multi-FPGA Pipeline Architecture 基于多fpga流水线架构的毫米波阵列雷达实时波束优化

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971458

Muhui Cai, Zhiqiang Sun, Wei Hua, Sili Wu, Yushan Guo, Ying Sun

引用次数: 0

Mechanism of Mechanics Evolution of Li-ion Battery Separator 锂离子电池隔膜力学演化机理研究

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971450

Chen Jian, Xiao Xinyao, Zhang Xingyu, L. Tong, Xie Jingying, Wang Ke

引用次数: 0

Research on Digital Modeling of Spacecraft Power System Based on Modelica 基于Modelica的航天器动力系统数字化建模研究

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971321

Heng Li, Libin Xin, W. Zhang, Bin Shu, Jijun Ma

引用次数: 0

Multi-temporal PolSAR Image Classification Using F-SAE-CNN 基于F-SAE-CNN的PolSAR图像多时相分类

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971318

Junjie Luo, Yang Lv, Jiao Guo

{"title":"Multi-temporal PolSAR Image Classification Using F-SAE-CNN","authors":"Junjie Luo, Yang Lv, Jiao Guo","doi":"10.1109/CISS57580.2022.9971318","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971318","url":null,"abstract":"Crop classification using polarimetric SAR data is one of the most important applications in Polarimetric Synthetic Aperture Radar (PolSAR) imagery. Obviously, for crop classification, multi-temporal PolSAR data can provide more information than single-temporal PolSAR data, but the processing method of the matching image data is relatively backward. Aiming at the high-dimensional data composed of multi-temporal PolSAR, this paper proposes a method to integrate the stacked auto-encoder network and convolutional neural network, making full use of the dimension reduction advantages of the stacked auto-encoder network and the superior classification performance of the convolutional neural network. By constructing a fusion network, the multi-temporal PolSAR images can be processed once, the classification accuracy can be improved, and the processing steps can be simplified. The experimental results show that, compared with the traditional Stacked Auto-encoder and Convolutional Neural Network (SAE-CNN) classification method, the multitemporal PolSAR image classification method based on Fusion of Stacked Auto-encoder and Convolutional Neural Network (F-SAE-CNN) proposed in this paper has the highest classification accuracy, which effectively combines the advantages of the self-encoding network and the CNN network, and provides a new idea for PolSAR image classification work.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"258 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120854451","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

Photonics-based array radar imaging using an optically injected semiconductor laser 利用光注入半导体激光器的基于光子的阵列雷达成像

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971388

Guanqun Sun, Fangzheng Zhang, Jiayuan Kong, Xiaoyue Yu, Jinhu Li, S. Pan

引用次数: 0

A new test method on the conversion loss of mixer 一种测试混合器转换损耗的新方法

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971219

Wei Li, Sili Wu, Zhaokai Pan

引用次数: 0

Ka and X Dual-band Microstrip Phased Array Antenna Design Ka和X双频微带相控阵天线设计

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971312

Jiahe Mei, Shichao Zheng, Sili Wu, Zhipeng Song, Xiang Chen, Lipeng Fu

{"title":"Ka and X Dual-band Microstrip Phased Array Antenna Design","authors":"Jiahe Mei, Shichao Zheng, Sili Wu, Zhipeng Song, Xiang Chen, Lipeng Fu","doi":"10.1109/CISS57580.2022.9971312","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971312","url":null,"abstract":"With the continuous development of radar, higher and higher demands are placed on the antenna. The traditional single-band antenna can obtain limited information, and the use of dual-band antenna can expand the dimension of target information acquisition, and more effectively classify and identify various targets. Therefore, in this paper, the Ka/X double-segment phased array antenna is researched, and a phased array antenna that can work in the Ka and X frequency bands is designed by HFSS simulation. The Ka and X frequency bands are combined in the form of a layered microstrip antenna. The designed dual-band antenna has a large bandwidth of 6GHz in the Ka frequency band, the gain reaches 29dB, and the standing wave is less than 2. It can achieve ±25 degree scanning function, and has good electrical properties. The designed dual-band antenna has a bandwidth of 700MHz in the X-band, the gain reaches 18dB, and the standing wave of less than 2. It can achieve ±30 degree scanning function and has good electrical performance. The Ka/X double-segment phased array antenna design has laid a foundation for the Ka/X double-segmented phased array antenna research, which has important practical significance.","PeriodicalId":331510,"journal":{"name":"2022 3rd China International SAR Symposium (CISS)","volume":"2 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":"132166419","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

LSS-target Intelligent Detection Method Suitable for Complex Geographical Environment 适用于复杂地理环境的lss目标智能检测方法

2022 3rd China International SAR Symposium (CISS) Pub Date : 2022-11-02 DOI: 10.1109/CISS57580.2022.9971175

Hao Chen, Chanjuan Zhao, Chunlei Zhao, Guanghui Xu, Ming Fang

{"title":"LSS-target Intelligent Detection Method Suitable for Complex Geographical Environment","authors":"Hao Chen, Chanjuan Zhao, Chunlei Zhao, Guanghui Xu, Ming Fang","doi":"10.1109/CISS57580.2022.9971175","DOIUrl":"https://doi.org/10.1109/CISS57580.2022.9971175","url":null,"abstract":"In complex geographical environment, due to the serious aliasing of clutter and target echo, problems such as false alarm and missed detection appear frequently in the detection of LSS-targets, resulting in the low detection probability of radar for such targets. To cope with such difficulty, the paper proposes an intelligent detection method for LSS-targets. First, The scene is identified and judged by the KMeans algorithm; then the strong clutter, especially strong point source clutter, is suppressed by the RELAX algorithm to reduce its influence on the weak target echo. Then coherent accumulation is performed through the Doppler filter bank to improve the signal-to-clutter ratio. Finally, adaptive clutter scene judging is performed on the detection area, and intelligent constant false alarm detection is performed in the range dimension of certain Doppler channel. Compared with traditional methods, the proposed algorithm shows superior ability of weak target detection and distinguished adapt ability in complex scenarios. Simulation results verify the effectiveness of the proposed algorithm.","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":"130103713","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