Title :
THz 3-D Image Formation Using SAR Techniques: Simulation, Processing and Experimental Results
Author :
Jinshan Ding ; Kahl, M. ; Loffeld, Otmar ; Bolivar, P. Haring
Author_Institution :
Center for Sensorsystems (ZESS), Univ. Siegen, Siegen, Germany
Abstract :
An active frequency-modulated continuous wave (FMCW) terahertz (THz) system has been developed to image objects in millimeter-scale resolution in three dimensions. The two-dimensional (2-D) aperture synthesis enables the improvement of cross range resolution, and its high range resolution is achieved through the use of the broadband sweep signal, whose frequency ranges from 514 to 565 GHz. The 3-D data are sufficiently focused by the wavenumber domain approach derived for the dechirped data. We present the THz 3-D imaging strategy using synthetic aperture radar (SAR) techniques, the related theoretical background and the experimental results in this paper.
Keywords :
CW radar; FM radar; synthetic aperture radar; terahertz wave imaging; 2D aperture synthesis; 3D data; FMCW terahertz system; SAR techniques; THz 3-D imaging strategy; THz 3D image formation; broadband sweep signal; cross range resolution; frequency 514 GHz to 565 GHz; frequency-modulated continuous wave terahertz system; high range resolution; image objects; millimeter-scale resolution; synthetic aperture radar techniques; two-dimensional aperture synthesis; wavenumber domain approach; Azimuth; Image resolution; Imaging; Radar imaging; Signal resolution; Synthetic aperture radar; Submillimeter imaging; THz radar; synthetic aperture; terahertz (THz) imaging;
Journal_Title :
Terahertz Science and Technology, IEEE Transactions on
DOI :
10.1109/TTHZ.2013.2271298
