基于目标极化特性的人体隐藏危险品检测方法
发布时间：2018-09-03 08:42
【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。
[Abstract]:In order to solve the problem of detecting hidden dangerous goods in the open distance of human body, the depolarization phenomenon of radar echo is used to realize the remote detection of metal objects such as guns. By measuring the radar echo in different polarization directions and calculating the detection parameters, we can judge whether the target is carrying hidden dangerous goods. To verify the effectiveness of this method, a 140 GHz wideband polarimetric radar is designed and developed. The experimental results show that, on the one hand, the system has a good detection effect for targets with significant depolarization effects such as guns, or improvised explosives; on the other hand, The detection of targets which have not obvious depolarization effect and the increase of detection distance will lead to the increase of false alarm and false alarm probability, which will reduce the detection performance. The detection effect can be improved by increasing the size of the transmitting antenna, and the detection performance can be improved by optimizing the detection parameters at the same distance.
【作者单位】： 中国工程物理研究院电子工程研究所;
【基金】：国家973计划项目(2015CB755406)~~
【分类号】：TN957.51
本文编号：2219467
[Abstract]:In order to solve the problem of detecting hidden dangerous goods in the open distance of human body, the depolarization phenomenon of radar echo is used to realize the remote detection of metal objects such as guns. By measuring the radar echo in different polarization directions and calculating the detection parameters, we can judge whether the target is carrying hidden dangerous goods. To verify the effectiveness of this method, a 140 GHz wideband polarimetric radar is designed and developed. The experimental results show that, on the one hand, the system has a good detection effect for targets with significant depolarization effects such as guns, or improvised explosives; on the other hand, The detection of targets which have not obvious depolarization effect and the increase of detection distance will lead to the increase of false alarm and false alarm probability, which will reduce the detection performance. The detection effect can be improved by increasing the size of the transmitting antenna, and the detection performance can be improved by optimizing the detection parameters at the same distance.
【作者单位】： 中国工程物理研究院电子工程研究所;
【基金】：国家973计划项目(2015CB755406)~~
【分类号】：TN957.51
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