Polarimetric Approaches for Persistent Scatterers Interferometry

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/37745
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Title: Polarimetric Approaches for Persistent Scatterers Interferometry
Authors: Navarro Sánchez, Víctor Diego | Lopez-Sanchez, Juan M. | Ferro-Famil, Laurent
Research Group/s: Señales, Sistemas y Telecomunicación
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal
Keywords: Persistent scatterers | Polarimetry | Subsidence | Synthetic aperture radar (SAR) interferometry
Knowledge Area: Teoría de la Señal y Comunicaciones
Issue Date: Mar-2014
Publisher: IEEE
Citation: IEEE Transactions on Geoscience and Remote Sensing. 2014, 52(3): 1667-1676. doi:10.1109/TGRS.2013.2253111
Abstract: In previous works, a general framework to exploit polarimetric diversity to optimize the results of persistent scatterers interferometry (PSI) was presented, but tested only with dual-pol data. In this paper, the performance of these algorithms is assessed using fully polarimetric data, acquired by the Radarsat-2 satellite over the urban area of Barcelona, Spain. In addition, two new highly efficient polarimetric optimization methods, mean intensity polarimetric optimization and joint diagonalization-based polarimetric optimization, are introduced and evaluated. Given the variety of dual-pol configurations provided by current polarimetric satellites, such as TerraSAR-X and Radarsat-2, and the upcoming launch of Sentinel-1, ALOS-2, and Radarsat Constellation Mission, a study has been also carried out to determine the best performing dual-pol configurations for polarimetric PSI. Subsidence maps of the area of study are computed for single-pol, dual-pol, and full-pol data, which show the increase in pixel density with valid deformation results as more polarimetric information is made available. In particular, for full-pol data we get an increase of up to 2.5 times more pixels for coherence-based PSI techniques (degraded resolution), and over four times more for amplitude-based approaches (full resolution), in comparison with single-pol data. Both higher density and quality of pixels yield better results in terms of coverage and accuracy.
Sponsor: This work was supported in part by the Spanish Ministerio de Economía y Competitividad and European Union FEDER funds under Project TEC2011-28201-C02-02.
URI: http://hdl.handle.net/10045/37745
ISSN: 0196-2892 (Print) | 1558-0644 (Online)
DOI: 10.1109/TGRS.2013.2253111
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Copyright 2014 IEEE
Peer Review: si
Publisher version: http://dx.doi.org/10.1109/TGRS.2013.2253111
Appears in Collections:INV - SST - Artículos de Revistas

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