Three-dimensional real-time through-the-wall imaging

Author

Zhang, Wenji ; Liu, Qing Huo ; Hoorfar, Ahmad

Author_Institution

Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

In this paper a three-dimensional (3D) diffraction tomographic (DT) algorithm is proposed for real-time through-the-wall imaging (TWI). The spectral expansion of the three-layered medium dyadic Green´s function is employed to derive a linear relation between the spatial Fourier transforms of the image and the scattered field. Then the image is efficiently reconstructed with inverse Fast Fourier Transform (IFFT). The linearization of the inversion scheme with Born approximation and the easy implementation of the algorithm with FFT/IFFT make the DT algorithm suitable for on-site TWI applications.

Keywords

Green´s function methods; approximation theory; electromagnetic wave diffraction; electromagnetic wave scattering; fast Fourier transforms; inverse transforms; radar imaging; synthetic aperture radar; tomography; 3D diffraction tomographic algorithm; 3D-DT algorithm; Born approximation; FFT-IFFT algorithm; TWI; inverse fast Fourier transform; inversion scheme; scattered field; spatial Fourier transforms; spectral expansion; synthetic aperture radar imaging; three-dimensional real-time through-the-wall imaging; three-layered medium dyadic Green´s function; Algorithm design and analysis; Educational institutions; Fourier transforms; Humans; Imaging; Radar imaging; Real-time systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6348544

Filename

6348544