%0 Journal Article
%T A new method for speckle filtering of SAR images<br>一种新的SAR图像的相干斑滤波方法
%A Zhao Zhiqin
%A Wang Jianguo
%A Wang Yunfeng
%A Huang Shunji
%A <br>赵志钦
%A 王建国
%A 王运锋
%A 黄顺吉
%J 电子与信息学报
%D 2002
%I 
%X This paper analyzes the statistics of speckle in SAR. And based on wavelet transform, this paper puts forwards a new method for speckle suppression. After wavelet transform, Lee filter is adopted for HH part and CFAR (Constant False Alarm Ratio) is used for HG, GH, HH. This method not only improves the ENL of images, but also keeps the important targets and edge. Compared with Lee algorithm that was generally used in SAR speckle filtering, this new method has the great advantage in speckle suppression and edge keeping. The experimental results prove the effectiveness of the method.
%K Synthetic aperture radar
%K Speckle
%K Filtering
%K Wavelet transform
%K Equivalent looks<br>合成孔径雷达
%K 相干斑滤波
%K 小波变换
%K 等效视数
%K 图像处理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=DAC00283804B1DA5&yid=C3ACC247184A22C1&vid=B91E8C6D6FE990DB&iid=38B194292C032A66&sid=4B168891B5E5FB30&eid=C7DDDE86E6286CD9&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=7