基于目标极化特性的人体隐藏危险品检测方法

安健飞; 成彬彬; 桑子儒; 陆彬; 岑冀娜; 邓贤进

doi:10.11999/JEIT160915

基于目标极化特性的人体隐藏危险品检测方法

doi: 10.11999/JEIT160915

基金项目:

国家973计划项目(2015CB755406)

计量
- 文章访问数: 1300
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- 被引次数: 0
出版历程
- 收稿日期: 2016-09-09
- 修回日期: 2017-01-22
- 刊出日期: 2017-07-19

Method of Standoff Detection of Concealed Body-worn Targets Based on Radar Polarization Properties

Funds:

The National 973 Program of China (2015CB 755406)

摘要

摘要: 为解决在站开式距离的人体隐藏危险品检测问题，利用目标对雷达回波的退极化现象实现对枪支等金属物的远距离检测。通过测量待测对象的雷达的不同极化方向的回波并计算出检测参量，就可以据此判断待测对象是否携带有隐藏危险品。为验证该方法有效性，设计并研制了一套140 GHz宽带极化雷达，并进行了实验测量。实验结果表明：一方面，对于枪支，或者简易爆炸物等退极化效应显著的目标，系统具有较好的检测效果；另一方面，对于退极化效应不明显的目标的检测以及检测距离的增加会导致系统的虚警和漏警概率增大，从而降低检测性能。通过增大发射天线尺寸可以改善检测效果，并且通过检测参量的优化可以提高同等距离下检测性能。
- 隐藏危险品检测 /
- 站开式非成像 /
- 退极化效应 /
- 宽带极化雷达
Abstract: In order to detect concealed body-worn weapon at standoff range, the depolarization effect of radar targets is utilized. By measuring radar echoes of the object at different polarization directions, detection parameters can be obtained and whether the human is carrying concealed weapon or not can be decided. In order to verify the effectiveness of the method, a 140 GHz broadband polarized radar is designed and used to carry out experimental measurements. The experimental results show that, on the one hand, for the firearms, or Improvised Explosive Devices (IED) and other targets that have significant depolarization effect, the system has a better detection effect; on the other hand, the detection of targets with less depolarization effect and the increase of detection distance will result in the increase of the probability of false alarm and probability of leakage alarm and deterioration of the system performance. The system performance can be improved by increasing the size of the transmitting antenna, and the detection performance at the same distance can also be improved by optimizating the detection parameters.
- Concealed weapon detection /
- Standoff non-image /
- Depolarization effect /
- Broadband polarized radar

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参考文献(18)

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