Effective Dielectric Constants of Foliage Media

摘要

The output from a model that calculates the effects of multiple scatteringprocesses that influence the scattering and absorption of electromagnetic radiation by dense foliage is presented. Results are presented as effective dielectric constants which can be used to represent the forest environment as a homogeneous dielectric slab in electromagnetic scattering models. An objective of this report is to present a formalism that allows the reader to incorporate the results into a simulation program. Several models of multiple scattering processes in the foliage media are considered for determining the effective parameters. A brief discussion of the Average T-Matrix Approximation (ATA) and the Coherent Potential Approximation (CPA) are presented. Keywords: Foliage scattering, EM Wave propagation, Effective dielectric, Radar clutter, Dielectric constant.