Title :
Computing the RCS of dielectric coated objects using multilevel fast multipole algorithm: impedance boundary condition approach
Author :
Oo, Zaw Zaw ; Liu, En-Xiao ; Er-Ping, Li ; Zhang, Y.J. ; Le-Wei, Li
Author_Institution :
Comput. Electron. & Electromagn. Div., Inst. of Flight Performance Comput., Singapore, Singapore
Abstract :
The fast multipole method (FMM) and multilevel fast multipole algorithm (MLFMA) are successfully developed to solve electrically very large sized perfectly electric conducting (PEC) objects. Using the impedance boundary conditions (IBC) the integral equations can be simplified and solved for wave problems involving imperfectly conducting surfaces. Thus, the algorithm is firstly implemented and verified by comparing with the exact analytical solution for a PEC sphere, and then extended for imperfectly conducting (thin material coating) objects and verified with the analytical solution. Subsequently, it has been applied to an aircraft model with both PEC and material coating surface the results and compared.
Keywords :
absorbing media; electromagnetic wave scattering; integral equations; method of moments; radar cross-sections; FMM; IBC; MLFMA; MoM; PEC; PEC sphere; aircraft model RCS; dielectric coated object RCS; electromagnetic integral equations; fast multipole method; impedance boundary conditions; imperfectly conducting surfaces; method of moments; multilevel fast multipole algorithm; numerical simulation tool; perfectly electric conducting objects; radar absorbing materials; radar cross section; scattering; Aerospace materials; Algorithm design and analysis; Boundary conditions; Coatings; Conducting materials; Dielectrics; Integral equations; MLFMA; Surface impedance; Surface waves;
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.2004.1459299
