Efficient Techniques for Accelerating the Ray-Tracing for Computing the Multiple Bounce Scattering of Complex Bodies Modeled by Flat Facets

─ A new algorithm to accelerate the raytracing for computing the radar cross section (RCS) of complex targets is presented. The algorithm is based on a combination of the angular Z-buffer (AZB), the volumetric space partitioning (SVP) and the depth-limited search method. The algorithm is very useful for RCS computing techniques based on geometrical optics (GO) and physical optics (PO). The targets are represented geometrically by a collection of flat patches. The approach is extremely efficient for computations of the RCS of large and complex bodies modeled by a high number of flat surfaces taking into account ray paths with multiple bounces. Results for representative targets are shown.

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