Title :
Analysis of composite EM scattering based on accurate geometry modeling
Author :
Li, Jie ; He, Qiong ; Guo, Lixin ; Wei, Bing
Author_Institution :
Sch. of Sci., Xidian Univ., Xi´´an, China
Abstract :
An approach to studying composite EM scattering from 2-D rough surface and half-buried 3-D target is proposed in this paper, from accurate geometry modeling to RCS analysis. First, two dimensional rough surface is simulated with spectral method, which then is converted into a continuous curved surface through inverse engineering. Target model and rough surface model are combined together to be a very accurate composite CAD model, after which surface mesh is generated with the information of incidence wave frequency. Then physical optics method (PO) and multi-level fast multipole algorithm (MLFMA) are respectively employed to study the scattering problem. The results of single rough surface and combinative model are given and the results by the two different methods are compared.
Keywords :
CAD; electromagnetic wave scattering; geometry; physical optics; radar cross-sections; radar tracking; rough surfaces; spectral analysis; splines (mathematics); target tracking; 2D rough surface model; MLFMA; NURBS model; RCS analysis; composite CAD model; composite EM scattering; continuous curved surface; geometry modeling; half-buried 3D target; incidence wave frequency; inverse engineering; multilevel fast multipole algorithm; physical optics method; scattering problem; spectral method; surface mesh; target model; Optical surface waves; Rough surfaces; Scattering; Sea surface; Solid modeling; Surface roughness; Surface waves; EM scattering; MLFMA; combinative target; physical optics; rough surface;
Conference_Titel :
Microwave, Antenna, Propagation, and EMC Technologies for Wireless Communications (MAPE), 2011 IEEE 4th International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8265-8
DOI :
10.1109/MAPE.2011.6156141