Space-frequency ultrawideband time-reversal imaging

被引：88
|
作者：
Yavuz, Mehmet E. [1 ]
Teixeira, Fernando L. [1 ]
机构：
[1] Ohio State Univ, Electrosci Lab, Dept Elect & Comp Engn, Columbus, OH 43212 USA
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2008年 / 46卷 / 04期
基金：
美国国家科学基金会;
关键词：
decomposition of the time reversal (TR) operator (DORT); imaging; Multiple Signal Classification (MUSIC); TR;
D O I：
10.1109/TGRS.2008.915755
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
We introduce time-reversal ultrawideband (UWB) imaging unctionals based on the simultaneous utilization of spatial and UWB frequency data acquired by limited-aspect antenna arrays. The targets are discrete scatterers embedded in homogeneous or continuous random inhomogeneous media. Singular value decomposition is applied to space-frequency multistatic scattering data matrices indexed by sensor location and frequency data, and the resulting singular values and vectors are employed to construct time-domain excitation signals for UWB imaging of the embedded scatterer(s) via synthetic backpropagation (reverse migration). Spatial information needed for focusing on the embedded scatterer(s) is provided by either the left singular vectors or the eigenvectors of the space-space multistatic data matrices. The resulting UWB imaging functionals can yield statistical stability in random media.
引用
收藏
页码：1115 / 1124
页数：10
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