Millimeter wave holographic imaging of concealed weapons

1971 ◽  
Vol 59 (9) ◽  
pp. 1383-1384 ◽  
Author(s):  
N.H. Farhat ◽  
W.R. Guard
Keyword(s):  
Millimeter Wave ◽  
Holographic Imaging ◽  
Concealed Weapons

A Practical Millimeter-Wave Holographic Imaging System with Tunable IF Attenuator

Frequenz ◽  
2017 ◽  
Vol 71 (11-12) ◽  
Author(s):  
Yu‐Kun Zhu ◽  
Ming‐Hui Yang ◽  
Liang Wu ◽  
Yun Sun ◽  
Xiao‐Wei Sun
Keyword(s):  
Millimeter Wave ◽  
Imaging System ◽  
Intermediate Frequency ◽  
Three Dimensions ◽  
Imaging Algorithm ◽  
Holographic Imaging ◽  
Concealed Weapons ◽  
Back Scattering ◽  
Security Checkpoints ◽  
Phase Differences

AbstractA practical millimeter-wave (mmw) holographic imaging system with tunable intermediate frequency (IF) attenuator has been developed. It can be used for the detection of concealed weapons at security checkpoints, especially the airport. The system is utilized to scan the passenger and detect the weapons hidden in the clothes. To reconstruct the three dimensions (3-D) image, a holographic mmw imaging algorithm based on aperture synthesis and back scattering is presented. The system is active and works at 28–33 GHz. Tunable IF attenuator is applied to compensate the intensity and phase differences between multi-channels and multi-frequencies.

Millimeter-Wave SAR for Concealed Item Holographic Imaging

2021 ◽  
Author(s):  
Peisheng Liang ◽  
Chi Zhang ◽  
Xu Qi ◽  
Zheng Yan ◽  
Tao Song ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Holographic Imaging

Sparse sampling and enhanced axial resolution in millimeter-wave holographic imaging

2010 ◽  
Author(s):  
Christy Fernandez-Cull ◽  
David A. Wikner ◽  
Michael Mattheiss ◽  
Joseph N. Mait ◽  
David Brady
Keyword(s):  
Millimeter Wave ◽  
Sparse Sampling ◽  
Axial Resolution ◽  
Holographic Imaging

Low-cost three-dimensional millimeter-wave holographic imaging system based on a frequency-scanning antenna

2017 ◽  
Vol 57 (1) ◽  
pp. A65
Author(s):  
Vahid Amin Nili ◽  
Ehsan Mansouri ◽  
Zahra Kavehvash ◽  
Mohammad Fakharzadeh ◽  
Mahdi Shabany ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Imaging System ◽  
Low Cost ◽  
Three Dimensional ◽  
Holographic Imaging ◽  
Frequency Scanning ◽  
Scanning Antenna

scholarly journals Near-Field Three-Dimensional Planar Millimeter-Wave Holographic Imaging by Using Frequency Scaling Algorithm

Sensors ◽  
2017 ◽  
Vol 17 (10) ◽  
pp. 2438 ◽  
Author(s):  
Ye Zhang ◽  
Bin Deng ◽  
Qi Yang ◽  
Jingkun Gao ◽  
Yuliang Qin ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Near Field ◽  
Three Dimensional ◽  
Frequency Scaling ◽  
Holographic Imaging
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