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Journal of Electronic Imaging

Compressed sensing of terahertz radar azimuth-elevation imaging
Author(s): Hongqiang Wang; Ruijun Wang; Bin Deng; Wuge Su
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Paper Abstract

There is increasing interest in high-resolution radar imaging of targets, and the recent development of terahertz (THz) imaging technique provides the depiction ability of targets in detail. The compressed sensing theory is introduced into terahertz radar azimuth-elevation imaging for facilitating the increasing sampling pressure and obtaining the improved imagery by exploiting the block sparse structure of a target’s reflectivity distribution. Compared with the conventional processing of even block partition in block sparsity, a block-coherence definition for uneven block partition is proposed as a sensing configuration quality parameter, and its relationship to the imagery reconstruction performance is verified. Further, a contrast metric for evaluating the improved image of uneven block partition is discussed without the knowledge of a true imaging result. The electromagnetic calculation data are used for the verification of imaging.

Paper Details

Date Published: 24 February 2015
PDF: 11 pages
J. Electron. Imag. 24(1) 013035 doi: 10.1117/1.JEI.24.1.013035
Published in: Journal of Electronic Imaging Volume 24, Issue 1
Show Author Affiliations
Hongqiang Wang, National Univ. of Defense Technology (China)
Ruijun Wang, National Univ. of Defense Technology (China)
Bin Deng, National Univ. of Defense Technology (China)
Wuge Su, National Univ. of Defense Technology (China)

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