Abstract
In this paper, we propose a least-squares-based method for multitemporal synthetic aperture radar interferometry that allows one to estimate deformations without the need of phase unwrapping. The method utilizes a series of multimaster wrapped differential interferograms with short baselines and focuses on arcs at which there are no phase ambiguities. An outlier detector is used to identify and remove the arcs with phase ambiguities, and a pseudoinverse of the variancecovariance matrix is used as the weight matrix of the correlated observations. The deformation rates at coherent points are estimated with a least squares model constrained by reference points. The proposed approach is verified with a set of simulated data.
Original language | English |
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Article number | 5518395 |
Pages (from-to) | 547-556 |
Number of pages | 10 |
Journal | IEEE Transactions on Geoscience and Remote Sensing |
Volume | 49 |
Issue number | 1 PART 2 |
DOIs | |
Publication status | Published - 1 Jan 2011 |
Keywords
- Interferometric synthetic aperture radar (InSAR)
- least squares
- phase ambiguity
- phase unwrapping
- synthetic aperture radar (SAR)
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- General Earth and Planetary Sciences