基于ChirpScaling算法的星载SAR成像处理实现方法

本文提出一种基于ＣｈｉｒｐＳｃａｌｉｎｇ（ＣＳ）算法的星载合成孔径雷达成像处理实现方法，该算法与目前国际上通用的距离－多普勒算法相比，由于避免了插值运算，且能够精确地进行距离徒动校正，使得成像质量优于精的ＲＤ算法。

A Spaceborne SAR Imaging Processing Algorithm Using Chirp Scaling

In this paper, a spaceborne synthetic aperture radar(SAR) imaging processing algorithm using chirp scaling(CS) algorithm is presented. Comparing with range/Doppler(RD) algorithm, this algorithm avoids interpolation,yet performs range cell migration correction accurately,so CS algorithm provides image quality results better than the precision RD algorithm. The algorithm requires only complex multiplies and fast Fourier transforms to implement the processing.This paper describes the chirp scaling algorithm in detail,and using SEASAT-A raw data makes computer digital imaging. The results show that imaging method presented in this paper is effectlve.