星载合成孔径雷达图像的斑点噪声抑制与滤波研究
首发时间:2005-12-06
摘要:随着载有合成孔径雷达(SAR)的各种卫星不断升空,SAR的研究越来越受到重视,合成孔径雷达干涉测量技术(InSAR)也随之得到了迅速的发展。由于SAR图像斑点噪声抑制和滤波是合成孔径雷达干涉测量技术成功的关键,本文对斑点噪声的来源以及几种SAR图像斑点噪声抑制与滤波算法作了分析,比较了不同算法的优缺点,给出了适合于干涉测量的SAR图像斑点噪声抑制与滤波算法。为了说明算法的有效性,本文采用台湾地区的SAR图像数据,验证了不同滤波算法对斑点噪声的抑制效果。
关键词: 合成孔径雷达 SAR图像 斑点噪声 滤波技术 干涉测量
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Speckle Suppression and Filtering Methods for Spaceborne SAR Images
Abstract: With the emission of satellites, the Synthetic Aperture Radar (SAR) and Interferometric Synthetic Aperture Radar (InSAR) have experienced great application and development, and much attention has been paid to speckle for the important role in the InSAR. There are many methods to suppress speckle,and the filters based on different techniques have been proposed in order to suppress speckle to different level. In this paper, the origin and the classic methods of SAR image speckle are analyzed, and the advantages and disadvantages of these methods are given. At last some classic methods are applied to a single-look ERS SAR image. The experimental results show the performance of these methods.
Keywords: Synthetic Aperture Radar SAR image Speckle Filtering technology InSAR
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No.4088235211133831****
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