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Research on synthetic aperture radar imaging technology of one-dimensional layered rough surfaces |
| Ji Wei-Jie (姬伟杰)a, Tong Chuang-Ming (童创明)a b |
a Missile Institute of Air Force Engineering University, Xi'an 713800, China;
b State Key Laboratory of Millimeter Waves, Nanjing 210096, China |
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Abstract 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.
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Received: 17 March 2012
Revised: 04 July 2012
Accepted manuscript online:
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PACS:
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03.50.De
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(Classical electromagnetism, Maxwell equations)
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03.65.Ge
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(Solutions of wave equations: bound states)
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| Fund: Project supported by the State Key Laboratory Fund of Millimeter Waves, Nanjing, China (Grant No. K201201) and the Natural Science Foundation Research Programs of Shannxi Province, China (Grant No. 2011JM8025). |
Corresponding Authors:
Ji Wei-Jie
E-mail: jiweijie01@163.com
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Cite this article:
Ji Wei-Jie (姬伟杰), Tong Chuang-Ming (童创明) Research on synthetic aperture radar imaging technology of one-dimensional layered rough surfaces 2013 Chin. Phys. B 22 020301
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