Fast Three-dimensional Sparse Holography Imaging Algorithm for Personal Security Verification

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Abstract

Terahertz holographic imaging has broad applications in the field of personal security verification, concealed weapon detection, and non-destructive testing. To suppress the range ambiguity, a fast sparse image reconstruction approach and imaging scheme is proposed for three-dimensional terahertz holography. The proposed algorithm establishes the terahertz imaging geometry and corresponding echo model. The range ambiguity is eliminated using the random step frequency method, and a frequency shift procedure is applied to recover the targets with a high computational efficiency. Simulation and experimental results verify the proposed algorithm.

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Key words： Terahertz holography imaging Fast sparse imaging Personal security verification system

Received: 2015-11-04; Published: 2016-02-03

Fund:

The Knowledge Innovation Program of the Chinese Academy of Sciences (YYYJ-1123), The National High Technology Research and Development Program of China (2012AA121901), The National Natural Science Foundation of China (11174280)

Corresponding Authors: 2016-02-03
E-mail: simba5@163.com

Cite this article:

. Fast Three-dimensional Sparse Holography Imaging Algorithm for Personal Security Verification[J]. JOURNAL OF RADARS, 2016, 5(3): 271-277.

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