Improved filtering parameter determination for the Goldstein radar interferogram filter

被引:129
作者
Li, Z. W. [1 ,2 ]
Ding, X. [1 ]
Huang, C. [1 ]
Zhu, J. J. [2 ]
Chen, Y. L. [1 ]
机构
[1] Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Kowloon, Hong Kong, Peoples R China
[2] Cent S Univ, Sch Infophys & Geomat Engn, Changsha 410083, Hunan, Peoples R China
基金
美国国家科学基金会;
关键词
Synthetic aperture radar (SAR); Modified Goldstein filter; Phase filtering; Coherence; Look number;
D O I
10.1016/j.isprsjprs.2008.03.001
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
Phase noise in a radar interferogram is directly related to interferometric coherence and the look number of the interferogram. Therefore an optimal radar interferogram filter should incorporate information on both interferometric coherence and look number. We present a modification to the commonly used Goldstein filter by Suggesting an improved determination of the filtering parameter. Experimental results with both simulated and real data sets show that the new filter offers much better results when used to filter radar interferograms. (C) 2008 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS). Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:621 / 634
页数:14
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