Wavelet transform-based interferometric SAR coherence estimator

A novel method to estimate interferometric coherence in synthetic aperture radar interferometry is proposed. It is demonstrated that this approach is not affected by the terrain topography, contrary to multilook techniques. In addition, since the method is based on the two-dimensional discrete wavel...

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Bibliographic Details
Published inIEEE signal processing letters Vol. 12; no. 12; pp. 831 - 834
Main Authors Lopez-Martinez, C., Fabregas, X., Pottier, E.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.12.2005
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Subjects
Coherence
Decorrelation
discrete wavelet transform (DWT)
Discrete wavelet transforms
DWT
Enginyeria de la telecomunicació
Equipment and supplies
ESAR-DLR X-band interferogram
Image processing
Imatge
interferometry
L-band
L-band interferogram
Phase estimation
Processament
Radar
Radar d'obertura sintètica
Radiocomunicació i exploració electromagnètica
Spatial resolution
Surfaces
Synthetic aperture radar
synthetic aperture radar (SAR)
Synthetic aperture radar interferometry
Teledetecció
Wavelet packets
Àrees temàtiques de la UPC
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Summary:A novel method to estimate interferometric coherence in synthetic aperture radar interferometry is proposed. It is demonstrated that this approach is not affected by the terrain topography, contrary to multilook techniques. In addition, since the method is based on the two-dimensional discrete wavelet packet transform, it allows recovering coherence information with a high spatial resolution. Results derived from simulated and experimental ESAR-DLR X- and L-band interferograms corroborate the performance of the proposed technique.
ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2005.859513