A Shooting and Bouncing Ray Method for Electrically Large Targets With Nonuniform Thickness Anisotropic Material

A shooting and bouncing ray (SBR) method for electrically large targets containing anisotropic material is presented in this communication. In contrast to the traditional SBR method, ray tracing is carried out inside the anisotropic material. First, the electromagnetic propagation matrix of an anisotropic material with arbitrary optical axis orientation is studied. The propagation of the ray tube inside the anisotropic material is then analyzed, and the path is recorded using quadtree. This method can be applied to targets containing nonuniform thickness anisotropic material, whether dielectric or magnetic. Numerical results show that the proposed method is highly efficient and accurate.