期刊
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
卷 12, 期 9, 页码 1838-1842出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LGRS.2015.2430752
关键词
Differential interferometric synthetic aperture radar (DInSAR); distributed scatterer (DS) interferometry; persistent scatterer (PS) interferometry (PSI); phase triangulation (PT); synthetic aperture radar (SAR)
类别
资金
- National Center for Airborne Laser Mapping via project NSF [EAR-1043051]
To improve the spatial density of measurement points of persistent-scatterer interferometry, distributed scatterer (DS) should be considered and processed. An important procedure in DS interferometry is the phase triangulation (PT). This letter introduces two modified PT algorithms (i.e., equal-weighted PT and coherence-weighted PT) and analyzes the mathematical relations between different published PT methods (i.e., the maximum-likelihood phase estimator, least squares estimator, and eigendecomposition-based phase estimators). The analysis shows that the above five PT methods share very similar mathematical forms with different weight values in the estimation procedure.
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