A new method of weighted choice in InSAR Least Squares unwrapping

A new method of weighted choice in InSAR Least Squares unwrapping

The decorelation phenomena such as Low-SNR radar signal, shadows and layover caused by topography etc, causes phase data discontinuous and makes the result of unwrapping phase inaccurate or completely wrong. Based on the analysis of influencing factors to the weight selection, this paper develops a...

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Bibliographic Details
Main Authors: Liu Weike, Liu Goulin
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2012-02-01
Series:Geodesy and Geodynamics
Subjects:
least squares phase unwrapping
de-coherence
phase quality areas
sub-estimate to the slope
weighted
Online Access:http://www.sciencedirect.com/science/article/pii/S1674984715301075
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spelling doaj-a37d8c6cc37144aab59ca95e335385dd2021-02-02T01:05:01ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472012-02-0131394310.3724/SP.J.1246.2012.00039A new method of weighted choice in InSAR Least Squares unwrappingLiu Weike0Liu Goulin1Geomatics College, Shandong University of Science and Technology, Qingdao 266510, ChinaGeomatics College, Shandong University of Science and Technology, Qingdao 266510, ChinaThe decorelation phenomena such as Low-SNR radar signal, shadows and layover caused by topography etc, causes phase data discontinuous and makes the result of unwrapping phase inaccurate or completely wrong. Based on the analysis of influencing factors to the weight selection, this paper develops a new method to choose the weights based on the measurement of confidence in frequency domain. Results show that it is more precise and robust than other methods, and can make up for the defect of sub-estimate to the slope of least squares method.http://www.sciencedirect.com/science/article/pii/S1674984715301075least squares phase unwrappingde-coherencephase quality areassub-estimate to the slopeweighted
collection DOAJ
language English
format Article
sources DOAJ
author Liu Weike
Liu Goulin
spellingShingle Liu Weike
Liu Goulin
A new method of weighted choice in InSAR Least Squares unwrapping
Geodesy and Geodynamics
least squares phase unwrapping
de-coherence
phase quality areas
sub-estimate to the slope
weighted
author_facet Liu Weike
Liu Goulin
author_sort Liu Weike
title A new method of weighted choice in InSAR Least Squares unwrapping
title_short A new method of weighted choice in InSAR Least Squares unwrapping
title_full A new method of weighted choice in InSAR Least Squares unwrapping
title_fullStr A new method of weighted choice in InSAR Least Squares unwrapping
title_full_unstemmed A new method of weighted choice in InSAR Least Squares unwrapping
title_sort new method of weighted choice in insar least squares unwrapping
publisher KeAi Communications Co., Ltd.
series Geodesy and Geodynamics
issn 1674-9847
publishDate 2012-02-01
description The decorelation phenomena such as Low-SNR radar signal, shadows and layover caused by topography etc, causes phase data discontinuous and makes the result of unwrapping phase inaccurate or completely wrong. Based on the analysis of influencing factors to the weight selection, this paper develops a new method to choose the weights based on the measurement of confidence in frequency domain. Results show that it is more precise and robust than other methods, and can make up for the defect of sub-estimate to the slope of least squares method.
topic least squares phase unwrapping
de-coherence
phase quality areas
sub-estimate to the slope
weighted
url http://www.sciencedirect.com/science/article/pii/S1674984715301075
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AT liugoulin anewmethodofweightedchoiceininsarleastsquaresunwrapping
AT liuweike newmethodofweightedchoiceininsarleastsquaresunwrapping
AT liugoulin newmethodofweightedchoiceininsarleastsquaresunwrapping
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