Some investigations on radar cross Section using analytical and signal Processing techniques

Abstract

Radar Cross Section RCS estimation of complex objects has newlineattracted a great deal of attention in the past few decades Accurate estimation newlineof radar cross section will help in the design of fighter aircrafts ships and newlineobjects with complex nature The Finite Element method and Method of newlineMoments are found to be the preferred analytical techniques for the newlineestimation of RCS newlineIn the present research work, the problem domain was divided into newlinemany sub domains called finite elements and absorbing Boundary Conditions newline ABC s are used on the exterior surface of the finite element region to newlineeliminate reflections of the exiting electromagnetic waves The band matrix newlinewas used to estimate the scattering and incident fields For numerical newlinepurposes the objects like one dimensional objects are modeled by line newlinesegments two dimensional objects are modeled for triangular or rectangular newlinesurfaces and three dimensional objects are modeled for tetrahedral or newlinehexahedral volumes Finite Element Method FEM was found to increase the newlinecomplexity for large surface objects newline newline