Computation of radar cross sections using multilevel fast multipole algorithm

Author

Oo, Zaw Zaw ; Li, Jian-Ying ; Li, Le-Wei ; Kooi, Pang-Shyan

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore

fYear

2002

fDate

17-19 Aug. 2002

Firstpage

564

Lastpage

567

Abstract

The electric field integral equation is discretized by using the method of moments (MoM) to solve EM scattering problems such as RCS prediction, and antenna radiation with complex objects. The MoM where the complexity is O(N²) operations has limitations on electrically large objects so fast algorithms have been proposed in recent years. The fast multipole method (FMM) can reduce the complexity to O(N^1.5) and the multilevel fast multipole algorithm (MLFMA) up to O(N log N) operations. In this paper, the RCS of a sphere is analyzed using FMM and MLFMA. Furthermore, the monostatic RCS of a double ogive is compared with measured data for the accuracy of the MLFMA.

Keywords

computational complexity; electric field integral equations; electromagnetic wave scattering; method of moments; radar cross-sections; radar theory; EM scattering problems; MoM complexity; RCS prediction; antenna radiation; complex objects; electric field integral equation; electrically large object limitations; fast multipole method; method of moments; monostatic double ogive RCS; multilevel fast multipole algorithm; radar cross section computation; sphere RCS; Electromagnetic radiation; Electromagnetic scattering; Integral equations; Iterative methods; Large-scale systems; MLFMA; Message-oriented middleware; Moment methods; Radar cross section; Radar scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002. 2002 3rd International Conference on

Print_ISBN

0-7803-7486-X

Type

conf

DOI

10.1109/ICMMT.2002.1187762

Filename

1187762