应用近似小波变换的SAR运动目标检测与成象

SAR Detection and imaging of Moving Targets: Application of Approximate Wavelet Transform

本文针对小径向速度的运动目标，提出了近似小波变换检测与成象的方法。这种方法根据运动目标方位向速度产生的信号之间的频变率差异，以变参数的匹配滤波过程为基础，对运动目标进行检测与成象。本文求证出，近似小波变换不满足小波变换的许可条件，但是，在满足一个较宽松的许可条件时，具有近似小波变换的正反变换公式。

This paper propwses that an approximate wavelet transform can be used to detect and image moving targets with slow velocities in range dimension. The method is based on matched filter process with variant parameters which correspond frequency rates produced by azimuth motion of targests. It is derived that the transform shows similar formulas to wavelet transform and a wider admissiblity conditions.