Full wave analysis of VHF-UHF forest bistatic scattering mechanisms an investigation on the influence of electromagnetic coupling

A 3D coherent scattering model simulating the interaction of electromagnetic waves with forests has been developed. It is obtained by means of a full wave approach, based on an integral representation of the electric field. A method of moments is used to solve the integral equation and compute the scattered fields related to the various scattering mechanisms as well as the contribution of tree-trunks and branches. This model is used here to evaluate the impact of electromagnetic coupling effects between a group of scatterers (which can be the branches and the trunk of a single tree, multiple tree-trunks, or multiple trees) for monostatic and/or bistatic radar configurations. To validate our model, we compare our simulation results with anechoic chamber measurements.