%0 Journal Article
%T A Phase Unwrapping Approach Based on the Branch-Cut Method and Finite Element Method for Interferometric SAR<br>一种基于枝切法和有限元法的干涉SAR合成相位展开方法
%A Wu Nan
%A Feng Da-zheng
%A Liu Bao-quan
%A <br>武楠
%A 冯大政
%A 刘宝泉
%J 电子与信息学报
%D 2007
%I 
%X A two-dimensional phase unwrapping approach is proposed using the branch-cut method and finite element method. Different strategies are taken for different quality data regions: first, using the “congruence” characteristic of the branch-cut method, the unwrapped phases can be retrieved in the reliable region with the largest area; then with good boundary values provided, the remaining regions are unwrapped with the finite element method (FEM) in a least square sense. Experimental results, carried out on simulated and real data, show that the proposed approach overcomes the drawbacks of the branch-cut method and FEM, i.e., the “half-baked” solution and phase slope underestimation, respectively, and has an advantage over other approaches in accuracy.
%K Interferometric SAR
%K Branch cut
%K Least square
%K Finite Element Method (FEM)
%K Phase unwrapping<br>干涉SAR
%K 枝切法
%K 最小二乘法
%K 有限元法
%K 相位展开
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=F4445A8C87D32AA7&yid=A732AF04DDA03BB3&vid=771469D9D58C34FF&iid=E158A972A605785F&sid=5EB19D41D7A73119&eid=138D3449C4A7D4E9&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=11