Fundamental study on soil moisture variations under vegetation influencing L-band SAR backscatter – implementations for the development of an advanced forest monitoring system

摘要

Fundamental studies on the effect of soil moisture variations on observed backscattering signatures behavior of vegetated land surfaces are reported. Different L-band SAR systems have been used including ALOS/PALSAR, ALOS-2/PALSAR-2, Pi-SAR-L2, and GB-SAR. Using (partial) polarimetric decomposition accurate soil moisture estimates can be obtained under low vegetation covers. Implementations for the ongoing development of an advanced forest monitoring system are discussed.