Title :
Through-wall imaging (TWI) by radar: 2-D tomographic results and analyses
Author :
Song, Lin-Ping ; Yu, Chun ; Liu, Qing Huo
Author_Institution :
Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA
Abstract :
A two-dimensional nonlinear inverse scattering technique is developed for imaging objects in a multilayered medium that simulates the effects of building walls in the context of through-wall imaging (TWI). The effectiveness and capacity of the inversion algorithm and the feasibility of through-wall imaging is demonstrated via a number of numerical examples. It has been shown that using multifrequency data high-quality image reconstruction can be achieved with a limited array view.
Keywords :
Fourier transforms; backscatter; conjugate gradient methods; data acquisition; geophysical signal processing; geophysical techniques; image reconstruction; inverse problems; radar imaging; remote sensing by radar; tomography; 2D nonlinear inverse scattering; 2D tomography; biconjugate-gradient fast Fourier transform; building walls; contrast-source inversion; image reconstruction; layered media; multifrequency data; multilayered medium; object imaging; radar; through-wall imaging; Analytical models; Biomedical imaging; Context modeling; Image analysis; Image reconstruction; Inverse problems; Nonhomogeneous media; Radar antennas; Radar imaging; Tomography; Contrast-source inversion; biconjugate-gradient fast Fourier transform (BCGS-FFT) algorithm; inverse scattering; layered media; through-wall imaging (TWI);
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2005.857914
