INFLUENCE OF FOREST STRUCTURE ON THE SENTINEL-1 BACKSCATTER VARIATION – ANALYSIS WITH FULL-WAVEFORM LIDAR DATA

摘要

The availability of Sentinel-1 sensor provided the former unprecedented availability of high resolution dual-polarization Synthetic Aperture Radar (SAR) data over European continent. Dense time-series enables the study of the seasonal variability of C-Band SAR backscatter over forested areas. In this study, the Sentinel-1 backscatter and its annual variation is analysed with respect to forest type and structural parameters provided from the external dataset and airborne laser scanning acquisition. Different seasonal patterns are observed for coniferous and deciduous tree species. Less pronounced backscatter differences are also attributed to forest structure and vegetation cover fraction.