Volume scattering from corn and wheat canopies at 32GHz

摘要

The relationship between 32GHz backscatter measurements and wheat biomass and the underlying soil moisture content are investigated in this study. The received backscattered field deviates by about on the average of 2 dB between 0° and 20° of incident angle during a season. It is also represented that 00 responses is the most significant one as expected. The paper describes the experiment and investigates the radar sensitivity to biophysical parameters at different polarizations and incidence angle at different wheat phonological stages. Based on the experimental results, volumetric moisture content of soil contribution plays an important role in scattering phenomena and on radar cross section of canopies.