斜视模型下的机载InSAR定标方法研究Research calibration method of airborne interferometric SAR based on strabismus model
梁菲
摘要(Abstract)：
针对机载干涉SAR在斜视模型下,无法确定不同的干涉参数组合及其随机误差值会如何影响干涉定标结果的问题,利用敏感度方程定标理论,推导了斜视模型下干涉成像方程中各个参数的导数,建立了敏感度方程定标方法在斜视模型下的误差模型。基于该误差模型,进行仿真实验,在复杂地形中布设若干定标点,分别在逐步增多校正的干涉参数个数和增大干涉参数偏差量的情况下,基于敏感度方程定标模型,研究不同的干涉参数组合对定标结果的影响,以及在考虑原始数据随机误差的情况下,检验干涉参数的偏差边界值。研究表明,在斜视模型下,基于敏感度方程的干涉定标方法能够在多干涉参数和一定偏差的条件下对干涉参数实现有效校准。
关键词(KeyWords)： 机载干涉合成孔径雷达;斜视模型;干涉参数定标;敏感度方程;定标点
基金项目(Foundation):
作者(Author): 梁菲
DOI: 10.16251/j.cnki.1009-2307.2020.09.017
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