Volume 5 Issue 3
Jun.  2016
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Liu Wei, Li Chao, Zhang Qunying, Fang Guangyou. Fast Three-dimensional Sparse Holography Imaging Algorithm for Personal Security Verification[J]. Journal of Radars, 2016, 5(3): 271-277. doi: 10.12000/JR15116
Citation: Liu Wei, Li Chao, Zhang Qunying, Fang Guangyou. Fast Three-dimensional Sparse Holography Imaging Algorithm for Personal Security Verification[J]. Journal of Radars, 2016, 5(3): 271-277. doi: 10.12000/JR15116

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

doi: 10.12000/JR15116
Funds:

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)

  • Received Date: 2015-11-04
  • Rev Recd Date: 2016-01-05
  • Publish Date: 2016-06-28
  • 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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  • [1] Cooper K B, Dengler R J, et al.. THz imaging radar for standoff personnel screening[J]. IEEE Transactions on Terahertz Science and Technology, 2011, 1(1):169-182.
    [2] 赵雨露, 张群英, 李超, 等. 视频合成孔径雷达振动误差分析及补偿方案研究[J]. 雷达学报, 2015, 4(2):230-239. Zhao Yulu, Zhang Qunying, Li Chao, et al.. Vibration error analysis and motion compensation of video synthetic aperture radar[J]. Journal of Radars, 2015, 4(2):230-239.
    [3] Gao X, Li C, et al.. Study of a new millimeter-wave imaging scheme suitable for fast personal screening[J]. IEEE Antennas and Wireless Propagation Letters, 2012, 11: 787-790.
    [4] Gao X, Li C, et al.. Design, analysis and measurement of a millimeter wave antenna suitable for standoff imaging at
    [5] checkpoints[J]. Journal of Infrared, Millimeter and Terahertz Waves, 2011, 32(11):1314-1327. Tropp J A and Gilbert A C. Signal recovery from random measurements via orthogonal matching pursuit[J]. IEEE Transactions on Information Theory, 2007, 53(12): 4655-4666.
    [6] Daubechies I, Defrise M, and De Mol C. An iterative thresholding algorithm for linear inverse problems with a sparsity constraint[J]. Communications on Pure and Applied Mathematics, 2004, 57(11):1413-1457.
    [7] Gu S, Li C, et al.. Three-dimensional image reconstruction of targets under the illumination of Terahertz Gaussian beam-theory and experiment[J]. IEEE Transactions on Geoscience and Remote Sensing, 2013, 51(4):2241-2249.
    [8] Axelsson S R J. Analysis of random step frequency radar and comparison with experiments[J]. IEEE Transactions on Geoscience and Remote Sensing, 2007, 45(4):890-904.
    [9] Sun Zhaoyang, Li Chao, et al.. Fast three-dimensional image reconstruction of targets under the illumination of terahertz gaussian beams with enhanced phase-shift migration to improve computation efficiency[J]. IEEE Transactions on Terahertz Science and Technology, 2014, 4(4):479-489.
    [10] Steinberg B D. The peak sidelobe of the phased array having randomly located elements[J]. IEEE Transactions on Antennas and Propagation, 1972, 20(2):129-136.
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Fast Three-dimensional Sparse Holography Imaging Algorithm for Personal Security Verification

doi: 10.12000/JR15116
Funds:

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)

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.

Liu Wei, Li Chao, Zhang Qunying, Fang Guangyou. Fast Three-dimensional Sparse Holography Imaging Algorithm for Personal Security Verification[J]. Journal of Radars, 2016, 5(3): 271-277. doi: 10.12000/JR15116
Citation: Liu Wei, Li Chao, Zhang Qunying, Fang Guangyou. Fast Three-dimensional Sparse Holography Imaging Algorithm for Personal Security Verification[J]. Journal of Radars, 2016, 5(3): 271-277. doi: 10.12000/JR15116
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