NDLI: A Contribution of Polarimetry to Satellite Differential SAR Interferometry: Increasing the Number of Pixel Candidates

Content Provider	IEEE Xplore Digital Library
Author	Navarro-Sanchez, V.D. Lopez-Sanchez, J.M. Vicente-Guijalba, F.
Copyright Year	2004
Abstract	This letter presents a general method for increasing the number of pixel candidates, those selected for processing in advanced differential SAR interferometry, by means of the exploitation of the polarimetric information provided by new satellite sensors. The algorithm is formulated for two different criteria of selection: the average coherence over the stack of interferograms and the amplitude dispersion index of the stack of images. Experimental results obtained with dual-pol images of TerraSAR-X over an urban area have demonstrated the expected improvement. The number of pixel candidates for an arbitrary threshold is 60% higher than that for single-pol data when using the average coherence and three times higher when using the dispersion index. The approach has also been compared to a selection based on a set of conventional channels (the copolar linear channels and the first two Pauli ones), showing a slight improvement for coherence selection and an important one for amplitude dispersion selection.
Sponsorship	IEEE Geoscience and Remote Sensing Society
Starting Page	276
Ending Page	280
Page Count	5
File Size	385063
File Format	PDF
ISSN	1545598X
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polarimetry Satellites Interferometry Pixel Synthetic aperture radar Intelligent sensors Diversity reception Senior members Urban areas Radar imaging polarimetry Differential synthetic aperture radar (SAR) interferometry
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Geotechnical Engineering and Engineering Geology

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