InSAR干涉条纹图去噪方法的研究

分析了干涉条纹图中相位噪声的来源,介绍了几种专门用于InSAR干涉条纹图噪声滤除的方法,针对干涉条纹图的相位跳跃现象,提出了正余弦变换的方法解决相位跳跃的问题,并在此基础上提出了两种新的相位噪声滤除方法———正余弦均值滤波法和正余弦中值滤波法,最后进行了对比试验,证明了本文提出的方法具有噪声抑制效果好、边缘信息保持能力强、算法简单的特点。

The research on filtering of the phase noise filtering in the interferometric SAR

This paper firstly analyzes the sources of the phase noise in the Interferometric SAR. Then it introduces several methods specially used to filter the phase noise in the fringe. For the phase jump in the fringe, it proposes a method of sine & cosine transformation to solve the problem of phase jump. At the basis of the method of sine & cosine transformation, it puts forward two new methods the Sine &Cosine Mean Filter (SCMeanF) and the Sine &Cosine Median Filter (SCMedianF). At the last of this paper, it does some comparative tests. And it proves that these two filters not only filter the noise preferably but also preserve the edge for the better. And they also have the advantages of simple algorithms.