Xu, H. orcid.org/0000-0002-9559-3691, Zeng, G., Liu, W. orcid.org/0000-0003-2968-2888 et al. (1 more author) (2023) MLE-MPPL: a maximum likelihood estimator for multipolarimetric phase linking in MTInSAR. IEEE Transactions on Geoscience and Remote Sensing, 61. 5202913. ISSN 0196-2892
Abstract
Multi-Temporal Synthetic Aperture Radar Interferometry (MTInSAR) is an efficient geodetic tool for earth surface displacement measurement, and the polarimetric capability of current and upcoming Synthetic Aperture Radar (SAR) satellites offers a new opportunity to further improve MTInSAR phase series estimation. However, none of existing estimators for multipolarimetric MTInSAR phase series of distributed scatters (DSs) is derived under the minimum root mean square error (RMSE) criterion. In this work, a maximum likelihood estimator for multipolarimetric phase linking (MLE-MPPL) is proposed and the corresponding Cramer-Rao lower bound (CRLB) is also derived by modeling the polarimetric interferometric coherence matrix as the Kronecker product of polarimetric coherence matrix and interferometric coherence matrix. In addition, a new metric called Pol-detR is proposed for performance evaluation of multipolarimetric MTInSAR phase series estimation in practical scenarios where the RMSE is not feasible any more. Experimental results based on both simulated and real data show that the proposed MLE-MPPL achieves the best estimation performance and is more robust against inter-channel interference than existing methods.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Multi-Temporal SAR Interferometry (MTInSAR); multipolarimetric phase linking; CRLB; maximum likelihood estimation |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 15 Feb 2023 14:58 |
Last Modified: | 27 Sep 2024 14:51 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Refereed: | Yes |
Identification Number: | 10.1109/tgrs.2023.3243220 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:196426 |