中国物理B ›› 2013, Vol. 22 ›› Issue (2): 20301-020301.doi: 10.1088/1674-1056/22/2/020301
姬伟杰a, 童创明a b
Ji Wei-Jie (姬伟杰)a, Tong Chuang-Ming (童创明)a b
摘要: A quick and exact imaging method for one-dimensional layered rough surfaces is proposed in this paper to study the scattering characteristics of layered medium that exists widely in nature. The boundary integral equations of layered rough surfaces are solved by using the propagation-inside-layer expansion combining the forward and backward spectral acceleration method (PILE+FB-SA), and the back scattering data can be obtained. Then, a conventional synthetic aperture radar (SAR) imaging procedure called back projection method is used to generate two-dimensional (2D) image of the layered rough surfaces. Combining the relative dielectric permittivity of realistic soil, the random rough surfaces with Gauss spectrum are used to simulate the layered medium with rough interfaces. Since the back scattering data are computed by using the fast numerical method, this method can be used to study layered rough surfaces with any parameter, which has a great application value in the detection and remote sensing areas.
中图分类号: (Classical electromagnetism, Maxwell equations)