Title :
Analysis of impacts of various RAM on RCS of 3-D complex targets using the FEM-FMA [radar absorbing materials]
Author :
Pai, Wang ; Lezhu, Zhou ; Tan Yanhua ; Mingyao, Xia
Author_Institution :
Dept. of Electron., Peking Univ., Beijing, China
Abstract :
The hybrid vector finite element method and fast multipole algorithm (FEM-FMA) are used to calculate the RCS of 3D complex targets coated with various radar absorbing materials (RAM). For a cone as an example, This work analyzes the impact of four canonical RAM coatings, including lossy isotropic, positive uniaxial anisotropic, negative uniaxial anisotropic and nanometer absorbing materials on the electromagnetic scattering characteristics of the objects. The effect on the RCS caused by different coating thickness is discussed and an optimal coating thickness is obtained to attain the best stealth response. Numerical results shows that the back scattering RCS can be reduced about 16.6 dB compared with the uncoated objects by using an optimal coating of RAM.
Keywords :
absorbing media; anisotropic media; antireflection coatings; backscatter; electromagnetic wave scattering; finite element analysis; nanostructured materials; radar cross-sections; 3D complex targets; RAM; RCS; backscattering RCS; coating thickness optimization; electromagnetic scattering characteristics; fast multipole algorithm; hybrid FEM-FMA; lossy isotropic coating; nanometer absorbing materials; negative uniaxial anisotropic coating; positive uniaxial anisotropic coating; radar absorbing material coatings; radar stealth techniques; vector finite element method; Anisotropic magnetoresistance; Coatings; Conducting materials; Electromagnetic scattering; Equations; Message-oriented middleware; Nanostructured materials; Radar cross section; Radar scattering; Sparse matrices;
Conference_Titel :
Computational Electromagnetics and Its Applications, 2004. Proceedings. ICCEA 2004. 2004 3rd International Conference on
Print_ISBN :
0-7803-8562-4
DOI :
10.1109/ICCEA.2004.1459307
