DocumentCode :
1391411
Title :
A Temporal Decorrelation Model for Polarimetric Radar Interferometers
Author :
Lavalle, Marco ; Simard, Marc ; Hensley, Scott
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Volume :
50
Issue :
7
fYear :
2012
fDate :
7/1/2012 12:00:00 AM
Firstpage :
2880
Lastpage :
2888
Abstract :
This paper describes a physical model of the temporal changes that occur in vegetated land surfaces observed by a repeat-pass radar interferometer. We assume the temporal changes to be caused by a Gaussian-statistic motion of the vegetation elements, with motion variance changing along the vertical direction. We show that the temporal correlation between two interferometric radar signals is affected by the structural parameters of the vegetation, such as canopy height, and varies with the wave polarization. We validate the model using L-band data acquired by the Jet Propulsion Laboratory with the Uninhabited Aerial Vehicle Synthetic Aperture Radar airborne radar. This work provides new insights into the role of temporal decorrelation in interferometric radar applications.
Keywords :
Gaussian processes; airborne radar; decorrelation; geophysical image processing; geophysical techniques; radar interferometry; radar polarimetry; remote sensing by radar; synthetic aperture radar; vegetation; Gaussian statistic motion; L-band data; airborne radar; canopy height; interferometric radar signal; motion variance; polarimetric radar interferometer; repeat-pass radar interferometer; temporal decorrelation model; uninhabited aerial vehicle synthetic aperture radar; vegetated land surfaces; vegetation elements; wave polarization; Atmospheric modeling; Coherence; Correlation; Data models; Decorrelation; Radar; Decorrelation; interferometry; polarimetry; synthetic aperture radar (SAR);
fLanguage :
English
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
Publisher :
ieee
ISSN :
0196-2892
Type :
jour
DOI :
10.1109/TGRS.2011.2174367
Filename :
6096407
Link To Document :
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