Improvements in ray-tracing acceleration techniques to compute diffraction effect and doubles and triples effects in the RCS prediction of complex targets

The paper presents several improvements in ray-tracing acceleration techniques to compute diffraction and doubles and triples effects in the RCS (radar cross section) as fast as possible and minimize the use of computer memory. The approach is based on the application of the angular Z-buffer (AZB) algorithm together with the SVP (space volumetric partitioning) algorithm, for electrically large and complex bodies modelled by a high number of flat and/or curved surfaces.

INTRODUCTION

Nowadays, tools for the RCS prediction of complex target modelled by flat or curved facets using physical optics(PO) are quite efficient. An example of such tools is FASCRO [1].