InSAR Phase Unwrapping Algorithms with the Aid of GPS Control Points

被引：0
作者：
Luo H. [1 ]
He X. [2 ]
机构：
[1] School of Geography and Remote Sensing, Nanjing University of Information Science and Technology, Nanjing
[2] Institute of Satellite Navigation and Spatial Information System, Hohai University, Nanjing
来源：
Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University | 2017年 / 42卷 / 05期
基金：
中国国家自然科学基金;
关键词：
GPS; InSAR; Markov random field; Phase unwrapping; Residue-cut;
D O I：
10.13203/j.whugis20140956
中图分类号：
学科分类号：
摘要：
The precision of interferometric synthetic aperture radar(InSAR) phase unwrapping can be improved by aid of global positioning system(GPS). In this paper, a new branch-cut phase unwrapping algorithm using several GPS control points as unwrapping initial points is proposed. However this algorithm cannot produce correct estimates in residues and isolated regions introduced by the placement of branch cuts. It cannot guarantee the integer properties of the unknown circle number.To solve these problems A new synthesis algorithm that combines the new algorithm with phase unwrapping algorithm with aid of GPS based on Markov random filed(MRF) is proposed. The experimental results show that the synthesis algorithm combines the advantages of new several unwrapping initial points branch-cut algorithms and algorithms based on MRF and can offer higher precision with greater spatial coverage. © 2017, Research and Development Office of Wuhan University. All right reserved.
引用
收藏
页码：630 / 636
页数：6
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