亚毫米波人体隐藏目标复合散斑问题探讨

发布时间：2018-05-18 22:07

本文选题：THz相干成像 + 图像增强　；参考：《微波学报》2017年S1期

【摘要】：近10年来理论研究及实验表明亚毫米波具有对人体隐藏目标成像的潜能。但是,同皮肤/衣服等背景物体相比,隐藏目标的散射相对微弱,在分层介质遮挡、粗糙表面散射的共同作用下,回波信号中的隐藏目标信息被污染甚至被掩盖,导致在安防等实际应用中隐藏目标亚毫米波成像及检测的困难。如何利用亚毫米波独特的性能来解决隐藏目标成像的实际问题,是公共安全、反走私等人体检测的研究热点。本项目拟构建人体隐藏目标亚毫米波电磁散射模型及回波信号模型,掌握在不同频率、不同视角下模型参数与散斑统计特征参数之间的关系,提取复合散斑中蕴含的目标几何形状/物理特性等信息,以期获得隐藏目标清晰的人体成像结果。
[Abstract]:In recent 10 years, theoretical research and experiments show that submillimeter wave has the potential of imaging human hidden targets. However, compared with the background objects such as skin / clothing, the scattering of hidden targets is relatively weak. Under the joint action of layered media occlusion and rough surface scattering, the hidden target information in echo signal is contaminated or even masked. Therefore, it is difficult to hide target submillimeter wave imaging and detection in practical applications such as security and defense. How to use the unique performance of submillimeter wave to solve the practical problem of hidden target imaging is a hot research topic in human detection such as public safety and anti-smuggling. This project intends to construct the submillimeter wave electromagnetic scattering model and echo signal model of human hidden target, and grasp the relationship between the model parameters and speckle statistical characteristic parameters at different frequencies and different angles of view. The geometric shape / physical properties of the target contained in the composite speckle are extracted in order to obtain the clear human body imaging results of the hidden target.
【作者单位】：中国工程物理研究院电子工程研究所;
【分类号】：TN015

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