A new method of weight choice in InSAR least squares unwrapping
The de-coherence phenomena such as Low-SNR radar signal, shadows and layover caused by topography, etc., causing phase data discontinuity, makes the result of unwrapping phase inaccuracy or even completely wrong. Based on the analysis of influencing factors to weight choice, this thesis develops a n...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2013-02-01
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| Series: | Geodesy and Geodynamics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984715300604 |
| _version_ | 1819179944752709632 |
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| author | Liu Weike Liu Goulin |
| author_facet | Liu Weike Liu Goulin |
| author_sort | Liu Weike |
| collection | DOAJ |
| description | The de-coherence phenomena such as Low-SNR radar signal, shadows and layover caused by topography, etc., causing phase data discontinuity, makes the result of unwrapping phase inaccuracy or even completely wrong. Based on the analysis of influencing factors to weight choice, this thesis develops a new method to choose the weights based on the measure of the confidence in the frequency domain. Experiments show that it could overcome the defect of sub-estimate to the slope of least squares method very well, which has a better rationale, stability and performance. |
| first_indexed | 2024-12-22T22:06:30Z |
| format | Article |
| id | doaj.art-89b5425847f54470806e38886117d48f |
| institution | Directory Open Access Journal |
| issn | 1674-9847 |
| language | English |
| last_indexed | 2024-12-22T22:06:30Z |
| publishDate | 2013-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Geodesy and Geodynamics |
| spelling | doaj.art-89b5425847f54470806e38886117d48f2022-12-21T18:10:57ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472013-02-0141354010.3724/SP.J.1246.2013.01035A new method of weight 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 de-coherence phenomena such as Low-SNR radar signal, shadows and layover caused by topography, etc., causing phase data discontinuity, makes the result of unwrapping phase inaccuracy or even completely wrong. Based on the analysis of influencing factors to weight choice, this thesis develops a new method to choose the weights based on the measure of the confidence in the frequency domain. Experiments show that it could overcome the defect of sub-estimate to the slope of least squares method very well, which has a better rationale, stability and performance.http://www.sciencedirect.com/science/article/pii/S1674984715300604least squares phase unwrappingde-coherencephase quality areassub-estimate to the slopeweight |
| spellingShingle | Liu Weike Liu Goulin A new method of weight choice in InSAR least squares unwrapping Geodesy and Geodynamics least squares phase unwrapping de-coherence phase quality areas sub-estimate to the slope weight |
| title | A new method of weight choice in InSAR least squares unwrapping |
| title_full | A new method of weight choice in InSAR least squares unwrapping |
| title_fullStr | A new method of weight choice in InSAR least squares unwrapping |
| title_full_unstemmed | A new method of weight choice in InSAR least squares unwrapping |
| title_short | A new method of weight choice in InSAR least squares unwrapping |
| title_sort | new method of weight choice in insar least squares unwrapping |
| topic | least squares phase unwrapping de-coherence phase quality areas sub-estimate to the slope weight |
| url | http://www.sciencedirect.com/science/article/pii/S1674984715300604 |
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