Forest Height Retrieval in Tropical Areas Using P-Band Multibaseline SAR Data
ieee asia pacific conference on synthetic aperture radar(2019)
摘要
The objective of this work is to provide an experimental assessment of the accuracy to retrieve forest height in tropical areas by using P-band multibaseline SAR data. Two different approaches are considered for retrieving forest height: i) parametric inversion based on the assumption of RVoG model, and ii) direct assessment by thresholding the estimated tomographic intensities. Both approaches are tested based on P-band data from the ESA campaigns: TropiSAR, flown in French Guiana in 2009. Validations are carried out by performing pixel-by-pixel comparisons against the canopy height model (CHM) derived from LiDAR measurements. Results show that at a resolution of
$25\ \mathrm{m}\times 25\ \mathrm{m}$
, both of the two approaches are able to retrieve forest height to within an accuracy of about 3.5 m or better over the interval of forest height between 20 to 40 m.
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关键词
Forest height,RVoG model,SAR tomography,P-band
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