基于主星带伴随小卫星编队系统的AT-INSAR研究

针对主星带伴随小卫星编队雷达系统的特点和AT INSAR的基本原理,本文对主星带伴随小卫星编队雷达系统执行AT INSAR任务进行了比较全面的分析。本文建立了主星带伴随小卫星编队雷达系统AT INSAR模型。基于这个模型分析了临界基线、测速精度,以及动目标检测等性能。最后,对一个L波段的主星带伴随小卫星编队系统完成AT INSAR任务进行了仿真。结果表明,测速精度对于编队小卫星的基线测量精度要求相对较高,而且检测地面慢速运动目标是可行的。

Along Track Interferometric SAR for Spaceborne Parasitic Radar System

In this paper, based on characteristics of Spaceborne Parasitic Radar System and the principle of along track interferometry SAR, Along Track Interferometric SAR for Spaceborne Parasitic Radar System was analyzed in many aspects. Firstly, the model of along track interferometry SAR was established. Then we deduce and analyze the performance for Critical Baseline, velocity resolution and moving target detection. Finally a L-band along track Interferometric SAR for Spaceborne Parasitic Radar System is simulated and calculated. The results indicate that accuracy of spatial baseline of micro-satellite cluster is more sensitive for the accuracy of target velocity estimation, and detection of ground slow motive target is available for Spaceborne Parasitic Radar System.