Radiative transfer theory for active remote sensing of halfspace random media
Abstract
In active remote sensing of lowloss and scatteringdominant areas, the effect of volume scattering can be modelled as a halfspace random medium with lateral and vertical fluctuations. Correlation functions are assumed to be gaussian laterally and exponential vertically. The radiative transfer theory is developed in this paper to calculate backscattering cross sections. An iteration process is used. When calculated to first order in albedo, the result gives the singlescattering effects and confirms previous work. Calculated to second order, we find that the backscattered power exhibits depolarization effects. This important consequence is studied numerically by illustrating the backscattering cross sections as a function of incidence angles and frequencies.
 Publication:

Radio Science
 Pub Date:
 October 1978
 DOI:
 10.1029/RS013i005p00763
 Bibcode:
 1978RaSc...13..763T
 Keywords:

 Backscattering;
 Electromagnetic Scattering;
 Half Spaces;
 Radiative Transfer;
 Remote Sensors;
 Scattering Cross Sections;
 Depolarization;
 Iterative Solution;
 Mathematical Models;
 Statistical Distributions;
 Physics (General)