A simple two-dimensional inversion technique for imaging homogeneous targets in stratified media

被引:28
作者
Catapano, I
Crocco, L
Isernia, T
机构
[1] Ist Rilevamento Elettromagnet Ambiente, IREA CNR, I-80124 Naples, Italy
[2] Univ Cassino, Dipartimento Automat Elettromagnet Ingn Informaz, I-03043 Cassino, Italy
[3] Univ Naples Federico II, Dipartimento Ingn Elettron & Telecomun, Naples, Italy
关键词
inverse scattering; microwave tomography; subsurface sensing; rough surfaces; ground penetrating radar;
D O I
10.1029/2003RS002917
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The problem of reconstructing in a quantitative fashion dielectric objects embedded in a layered medium with possibly (unknown) rough interfaces is dealt with. In particular, a nonlinear inverse scattering technique is proposed as a suitable tool for giving an accurate imaging of homogenous targets. The proposed approach, which exploits multifrequency data, is not limited to the weak scattering case. Moreover, a simple method is proposed so that simultaneous reconstruction of both unknown permittivity and roughness profile can be performed. In order to assess effectiveness and accuracy of the proposed approach under actual field conditions, a small number of antennas placed on a short measurement line is considered. A large number of numerical simulations confirm the effectiveness of the inversion approach, as well as its robustness with respect to noise on data and approximate knowledge of background parameters.
引用
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页数:14
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