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电子学报  2012 

最大相干波束同步方法及其性能验证研究

DOI: 10.3969/j.issn.0372-2112.2012.08.011, PP. 1564-1571

Keywords: 分布式InSAR,波束同步,相干系数,性能分析,系统仿真

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Abstract:

波束同步是分布式InSAR系统的关键技术之一.本文提出一种基于最大相干系数的星载分布式InSAR系统波束同步方法.分析了该波束同步方法下,双站多普勒中心频率的计算方法及双站图像信噪比的损失.进而从干涉图像对去相干、干涉处理中的独立视数以及干涉时刻配准误差的影响几个方面指出该方法相对于传统波束同步方法的优势,并进行了InSAR全流程信号级仿真验证.仿真结果表明,该方法可以有效提高分布式InSAR系统的测高定位精度.

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