W Band Imaging System Using Linear Sparse Periodic Antenna Array and Compressive Sensing for Personnel Screening

被引：5
作者：
Hu, Shaoqing [1 ]
Shu, Chao [1 ]
Alfadhl, Yasir [1 ]
Chen, Xiaodong [1 ]
机构：
[1] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England
来源：
IEEE ACCESS | 2019年 / 7卷
关键词：
Sparse periodic antenna array (SPA); holographic/synthetic aperture radar (SAR) imaging; compressive sensing (CS); TERAHERTZ;
D O I：
10.1109/ACCESS.2019.2956630
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents our study on a W band imaging system consisting of a linear sparse periodic antenna array (SPA) with only 10 transmitting (Tx) and 10 receiving (Rx) elements in simulation and experiment for the purpose of personnel screening. We have devised a simplified and low cost experimental set-up using only 1 Tx and 1 Rx channels located on two scanning tracks separated by a distance to verify the proposed multi-static array imaging scheme. The simulation has taken account of the effects of track separation and measured antenna patterns. The simulation and experiment correlate quite well, indicating a resolution of about 7 mm at 1.3 m distance. Furthermore, based on the experimental data, we have investigated the compressive sensing (CS) image reconstruction as an approach for further reducing the sampling points in such a multi-static array imaging system. It is shown that using a discrete SPA-CS imaging algorithm, the images can be successfully reconstructed with the data as few as 30% of that used in the traditional holographic/synthetic aperture radar (SAR) imaging algorithm. Therefore, the CS image reconstruction is proved to be feasible for building a low-cost and fast millimeter wave imaging system.
引用
收藏
页码：173603 / 173611
页数：9
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