Fast Calculation of 3D Conductive Target Backscatter in a Random Medium using Coherence Based Monte Carlo Integration (CBMI)Method

摘要

In this paper, a fast m ethod t o perform backscattering calculations from perfect electrically conducting (PEC) objects embedded in continuous random media is presented. The current generator method (CGM) is revisited and is modified for speed, removing the need to perform matrix inverse operations. The presented formulations are adequate to solve two and three dimensional problems. A Monte Carlo technique will be employed to speed the high ordered integration by using the de-correlation in space found within the fourth moment of Green's function as an 'importance sampling' distribution. This incoherence is explicitly shown in the current generator formulation. The revisited formulation has improved functionality in its ability to consider three dimensional objects. Its algorithmic performance is analyzed and is found to be significantly faster than other candidate matrix based methods.