基于子孔径进行InSAR横滚补偿的参数选择研究

子孔径算法能有效消除单航过机载InSAR系统横滚运动引入的干涉相位误差。文中分析了不同子孔径长度下算法的补偿性能,指出在信噪比足够高的情况下,存在一个最佳子孔径长度使得补偿效果最好。仿真结果表明,在最佳子孔径长度下,该方法能有效消除横滚误差。

Study of Parameter Selection Based on Sub-aperture Algorithm for Roll Compensation in Interferometric SAR System

Sub-aperture algorithm is a valid method to estimate and correct roll related interferometric phase errors in a single pass from an aircraft-borne interferometric SAR.This paper studies the compensation performance at different sub-aperture lengthes,and points out under the high SNR condition there is a prime sub-aperture length which made the performance the best.The simulation results show that sub-aperture algorithm removes the roll effect validly under the best sub-aperture length.