极化SAR系统及其极化定标精度进展简述  

Brief Review on Polarimetric SAR Systems and Polarimetric Calibration Accuracies

作　　者：陶利 曲圣杰[2] TAO Li;QU Shengjie(Hefei Normal University,Hefei 230061,China;China Electronics Technology Group Corporation No.38 Research Institute,Hefei 230088,China)

机构地区：[1]合肥师范学院,安徽合肥230601 [2]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《遥感技术与应用》2024年第2期269-279,共11页Remote Sensing Technology and Application

基　　金：合肥师范学院校级科研资助基金项目(2023rcjj12)。

摘　　要：对国内外典型的星载、机载极化合成孔径雷达(SAR)系统及其辐射、极化定标实现情况和精度指标进行调研简述。首先给出了极化SAR数据校正精度的一般需求,然后较为系统的给出了国内外代表性的极化SAR系统现状及其取得的系统校正及数据定标精度成果,包括极化SAR系统相对辐射定标精度、绝对辐射定标精度、极化通道串扰精度、极化通道幅度不平衡精度、极化通道相位不平衡精度等方面,最后对极化SAR数据定标精度的影响因素进行分析。全面地阐述极化SAR系统定标精度信息索引及其发展现状,为相关研究人员提供及时、系统的极化SAR系统研制及其定标性能研究进展信息。A brief review has been conducted on the progress of typical spaceborne and airborne polarimetric Synthetic Aperture Radar(SAR)systems at home and abroad,for which the implementation of radiometric and polarimetric calibration accuracies has been focused and surveyed.First the general requirements for the polari⁃metric SAR data calibration accuracy have been drawing from literature research,and then the status quo of rep⁃resentative polarimetric SAR systems in the word and the system data calibration accuracy achievements have been systematically presented,including the relative radiometric calibration accuracy,the absolute radiometric calibration accuracy,the polarization channel crosstalk accuracy,the polarization channel amplitude imbalance accuracy,and the polarization channel phase imbalance accuracy,etc.Finally,the key factors affecting the cali⁃bration accuracy of polarimetric SAR data have been analyzed,and the future calibration tasks meeting the new polarimetric SAR system design has been briefly discussed.This paper comprehensively describes the calibra⁃tion accuracy information index of polarimetric SAR systems and their development status,and provides rele⁃vant researchers with timely,comprehensive and systematic information on the development requirements of po⁃larimetric SAR systems and the research progress of calibration accuracy achievements.

关 键 词：极化SAR系统 极化定标精度 辐射定标精度 

分 类 号：TN957[电子电信—信号与信息处理]