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NASA NTRS · 20150006051

Recent Advances on INSAR Temporal Decorrelation: Theory and Observations Using UAVSAR

Lavalle, M.·Hensley, S.·Simard, M.
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Abstract

We review our recent advances in understanding the role of temporal decorrelation in SAR interferometry and polarimetric SAR interferometry. We developed a physical model of temporal decorrelation based on Gaussian-statistic motion that varies along the vertical direction in forest canopies. Temporal decorrelation depends on structural parameters such as forest height, is sensitive to polarization and affects coherence amplitude and phase. A model of temporal-volume decorrelation valid for arbitrary spatial baseline is discussed. We tested the inversion of this model to estimate forest height from model simulations supported by JPL/UAVSAR data and lidar LVIS data. We found a general good agreement between forest height estimated from radar data and forest height estimated from lidar data.

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polarimetric SAR interferometrySynthetic aperture radar (SAR)

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Lavalle, M., Hensley, S., Simard, M.. 2011-09-19. Recent Advances on INSAR Temporal Decorrelation: Theory and Observations Using UAVSAR. https://ntrs.nasa.gov/citations/20150006051

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