Chirp Scaling成像算法及其仿真

Chirp Scaling Algorithm and its simulation

高分辨率是机载合成孔径雷达的一个重要发展方向。文章以高分辨率聚束模式合成孔径雷达的ChirpScaling成像算法(CSA)为主,讨论了CS算法的基本原理和实现过程,给出了计算过程中各个信号域的数学表达式,简要地介绍了CS算法的优缺点及其应用范围,最后给出了点目标仿真的系统参数和成像结果。

High resolution is one of the important developing directions of Synthetic Aperture Radar (SAR). A study of the Chirp Scaling Algorithm(CSA) for the spotlight SAR image formation is made in this paper. The CSA's fundamentals and realization course are discussed in detail,and the mathematic functions of all signal domains in the calculation process are offered. CSA's characters and applications are introduced briefly. At last,the point targets are simulated,and the parameters of the simulation system and the simulation result are presented.