Sensitivity Analysis of Along-track Interferometric Synthetic Aperture Radar in the Presence of Squint
Zhang Hui①②④ Hong Jun①③ Li Ji-chuan①③④ Ming Feng①③
①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(Key Laboratory of Technology in Geo-spatial Information Processing and Application System, Beijing 100190, China) ③(Science and Technology on Microwave Imaging Laboratory, Beijing 100190, China) ④(University of Chinese Academy of Sciences, Beijing 100190, China)
Abstract：Along-Track Interferometric Synthetic Aperture Radar (ATI-SAR) has the potential to measure the radial velocities of slowly moving targets. The accuracy of the radial velocity is limited by the accuracy of the interferometric parameters. Sensitivity equations are good ways to analyze the impact of the system parameters on interferometric SAR. Available sensitivity analysis for ATI-SAR mainly focuses on the case of no squint angle. In this paper, the expression of the radial velocity in the presence of squint is derived firstly, and the sensitivity equations are further obtained. Moreover, the sensitivity of the interferometric parameters is simulated with airborne parameters, and the accuracy requirements for different parameters are given for different velocity accuracy requirements, which provide quantitative reference for real airborne ATI-SAR analysis and calibration requirement analysis.
张慧, 洪峻, 李纪传, 明峰. 斜视情况下机载顺轨干涉SAR敏感度分析[J]. 电子与信息学报, 2014, 36(9): 2207-2213.
Zhang Hui, Hong Jun, Li Ji-Chuan, Ming Feng. Sensitivity Analysis of Along-track Interferometric Synthetic Aperture Radar in the Presence of Squint. , 2014, 36(9): 2207-2213.
2014, Vol. 36 
