MULTIBASELINE POLARIMETRIC SAR INTERFEROMETRY FOREST HEIGHT INVERSION APPROACHES

摘要

Polarimetric SAR interferometry (Pol-InSAR) is a radarrnremote sensing technique that is sensitive to the verticalrndistribution of scattering processes in volumes. ThernRandom Volume over Ground (RVoG) model is arnpowerful tool used to invert forest height from Pol-rnInSAR data. But Pol-InSAR inversion performancerndepends critically on uncompensated decorrelationrncontributions (i.e. temporal decorrelation in repeat passrnsystem) and the height sensitivity of the effectivernbaseline, represented by the vertical wavenumber κ_2 -rnTo overcome these constraints a multibaseline Pol-rnInSAR inversion approach could be an effectivernsolution. In this paper, different approaches forrncombining multibaseline Pol-InSAR inversion resultsrnare proposed and discussed. Multibaseline Pol-InSARrndata acquired by DLR's E-SAR system over thernTraunstein forest during the TempoSAR 2008 campaignrnare used.