Trees, Foliage and Complex Sceneries

27-Mar-2014

Scattering of EM waves from trees and foliage as well as the propagation of EM waves in the presence of forests plays an important role in many civil and military applications (such as Foliage Penetrating Radar for detecting potential targets in the forest).

Computationally efficient modeling of trees and foliage can be done with metallic wires for branches and metallic plates for leaves with distributed loadings over them. The approach is valid up to approximately 150 MHz (considering that the tree trunk has diameter less than about 2 ft / 60 cm). The number of unknowns needed for the simulation is reduced approximately 100 times! Only ~100 unknowns are needed for the modeling of a single tree.

On a standard desktop, the simulation of the entire forest with 100 randomly placed trees and additional objects lasts under a minute. The presented approach opens the possibility for a rapid full  3D EM simulation of complex sceneries involving trees, foliage, and potential targets inside forests.

Section: RCS/Scattering

For full version of the document, please check the following pdf.