Repeat-pass SAR interferometry over forested terrain

摘要: Repeat-pass synthetic aperture radar (SAR) interferometry provides the possibility of producing topographic maps and geocoded as well radiometrically calibrated images. However, usefulness such images depends on our understanding how different types terrain affect measurements. It is essential that scene coherence between passes sdcient. In this paper, we derive a general system model including both scattering properties. The used to interpret measurements over forested area where varies 0.2 0.5. found be sensitive temperature changes around 0°C but surprisingly insensitive wind speed. interferometric height discontinuity at forest openfield boundary shows good agreement with in situ tree for dense boreal forest, observed decrease less forest. This suggests estimating bole volume from ground DEM. increasing baseline also estimate effective layer thickness.