Application of pre-tracing technology in building of RCS calculation platform

The building of radar cross section (RCS) calculation platform which includes many different RCS mechanisms is introduced. Considering that the huge computation of ray tracing is the bottleneck of the efficiency of RCS calculation platform, a method for reducing the computation of ray tracing is given, which suggested the calculation of coupling scattering areas only. The authors conduct a rough ray tracing before really tracing to identify the coupling scattering areas, and obtain some scattering distribution maps of arbitrary targets. The ways to use the pre-tracing method efficiently in the RCS calculation platform are discussed, and the effects are predicted. The typical effect is improved through some calculation examples, and the coupling scattering area ratio of some typical targets is concluded, which is useful for the application of pre-tracing method. The results show that this pre-tracing method can reduce the computational cost of ray tracing part to less than 1/3 of the original. The possible application of pre-tracing method in other way is mentioned also.