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...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
KeAi Communications Co., Ltd.
2012-02-01
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Series: | Geodesy and Geodynamics |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984715301075 |
Summary: | 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. |
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ISSN: | 1674-9847 |