Abstract
Passive millimeter and terahertz wave imaging is a powerful way for personnel security inspection and scene monitoring. The existing systems usually have a single polarization mode. To obtain more information, polarimetric imaging has been preliminarily explored recently. However, there is no work exhibiting high-performance polarimetric imaging to analyze and interpret polarization characteristics. In this Letter, we report on the development of a W-band passive polarimetric imaging system for human body screening and present the polarization characteristics analysis of several typical scenarios. The experimental system has a spatial resolution of better than 2 cm at 2.5 m distance and has a thermal sensitivity of better than 0.3 K. The system can display polarization properties of human bodies and concealed objects. The experimental results demonstrate that passive polarimetric imaging has a great potential for object contrast enhancement, detection, segmentation, and recognition.
© 2021 Optical Society of America
Full Article | PDF ArticleMore Like This
Yayun Cheng, Yingxin Wang, Yingying Niu, and Ziran Zhao
Opt. Express 28(5) 6350-6366 (2020)
Yayun Cheng, Fei Hu, Hongfei Wu, Peng Fu, and Yan Hu
Opt. Express 26(16) 20145-20159 (2018)
Yayun Cheng, Fei Hu, Yan Hu, Ziran Zhao, and Yingxin Wang
Opt. Lett. 44(15) 3765-3768 (2019)