A new method about placement of the branch cut in two-dimensional phase unwrapping

被引：5
|
作者：
Xiao Feng [1 ]
Wu Jicang [1 ]
Zhang Lei [1 ]
Li Xiaoling [1 ]
机构：
[1] Tongji Univ, Dept Surveying & Geo Informat, Shanghai 200092, Peoples R China
来源：
2007 1ST ASIAN AND PACIFIC CONFERENCE ON SYNTHETIC APERTURE RADAR PROCEEDINGS | 2007年
关键词：
phase unwrapping; residues; branch cut; InSAR;
D O I：
10.1109/APSAR.2007.4418721
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Phase unwrapping is one of the key problems in data processing of interferometric synthetic aperture radar (InSAR). One of the classic unwrapping algorithms is the path following approach based on placement of branch cut. In this paper, we prove that existence of residues is a sufficient but unnecessary condition for the original phase discontinuity and the true placement of the branch cut is unique. Then a modified method of placing branch cuts which is guided by improved quality map is proposed. The simulation examples show that the modified method is more effective and practicable.
引用
收藏
页码：755 / 759
页数：5
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