Forest height estimation algorithm using polarizatric interference UAV-SAR images
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https://doi.org/10.54939/1859-1043.j.mst.77.2022.13-21Keywords:
PolInSAR; UAV-SAR; Complex interferometry coherence; Mean extinction coefficients.Abstract
This paper proposes a method to increase the accuracy in estimating forests height using polarimetric interferometry UAV-SAR images. The forest parameters extracted by the proposed method are implemented through three stages. The topographic phase and mean extinction coefficients can be determined in the first two steps through analyzing eigenvalues of the interferometry coherence matrix. The forest height is restored in the final stage based on the determination of a complex interferometry coherence factor for the canopy scattering component. The effectiveness of the proposed method are evaluated with UAV-SAR data from NASA/JPL’s AfiSAR project.
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