Title :
An improved physical optics method for the computation of radar cross section of electrically large objects
Author :
Fang, Chonghua ; Zhao, Xiaonan ; Liu, Qian
Author_Institution :
Nat. key Lab. of EMC, China ship Dev.&design Inst., Wuhan
Abstract :
An improved physical optics method for the computation of radar cross section of electrically large objects is presented. The method is quite general to compute the radar cross section (RCS) of arbitrarily shaped metal structures by rigorously transforming the radiation surface integral in the traditional PO method to a line integral along the metal boundary. Since the line integral is used in this method, the computation time can be reduced in comparison with the traditional PO method. The traditional PO method and the proposed method are compared by computing the RCS of a square plate and a triangular plate. It is confirmed that these two methods are similar in accuracy. Finally, an example of application to a 3-D body is demonstrated.
Keywords :
physical optics; radar cross-sections; RCS; arbitrarily shaped metal structures; electrically large objects; metal boundary; physical optics method; radar cross section; radiation surface integral; square plate; triangular plate; Integral equations; Laboratories; Optical computing; Partial differential equations; Physical optics; Physics computing; Poisson equations; Radar cross section; Scattering; Surface waves;
Conference_Titel :
Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compatibility, 2008. APEMC 2008. Asia-Pacific Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-981-08-0629-3
Electronic_ISBN :
978-981-08-0629-3
DOI :
10.1109/APEMC.2008.4559977
