一种基于信号稀疏分解的SAR相干斑抑制新方法

摘要

相干噪声是合成孔径雷达研究的热点问题,传统的相干噪声抑制方法有的造成分辨率下降,有的图像边缘难以保持,本文介绍了一种新的信号处理方法,即稀疏成份分析,并将其应用于合成孔径雷达的相干噪声抑制,实验结果证实这是一种抑制合成孔径雷达相干噪声的有效途径.%The study of the speckle is a hotspot to Synthetic Aperture Radar (SAR), the traditional way to reduce the speckle is either difficult to protect image edge characteristics or reduced the resolving power, in this paper a new signal processing method Sparse Component Analysis (SCA) is introduced .and applied to reduce the speckle to SAR, the result to the emulator show it is an effective approach to restrain the speckle to SAR.