Abstract
In this chapter, we firstly introduce the fundamental radiation detection theory of the passive millimeter-wave imaging technique for human-body security inspections. A radiation temperature transfer model for the passive millimeter-wave near-field imaging is then proposed. The method to analyze the temperature contrast between the human body and the concealed objects under indoor and outdoor environments is presented accordingly. Furthermore, several key technologies involved in the passive millimeter-wave imaging systems are discussed in detail, including the millimeter-wave radiometer, the millimeter-wave feed antenna, the focusing antenna, and the quasi-optical theory. Finally, a prototype of a Ka-band passive millimeter-wave imaging system based on the focal plane array is manufactured. The system design process and the measurement results for some typical scenarios are elucidated.
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Acknowledgements
The authors would like to express the sincere gratitude to Xinyu Yin, Mu Fang, Zifu Zhang, Hao Liu, Shanshan Xiao, Hanchi Ma, XuanZhai, BingxuZhao, QiangTong, HeZhang, Tianyao Du, Liqing Wang for their contributions in this work. Correspondence should be addressed to Prof. Jiaran Qi at qi.jiaran@hit.edu.cn.
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Qiu, JH., Qi, J., Wang, Nn., Denisov, A. (2018). Passive Millimeter-Wave Imaging Technology for Concealed Contraband Detection. In: Sidorenko, A. (eds) Functional Nanostructures and Metamaterials for Superconducting Spintronics. NanoScience and Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-90481-8_7
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DOI: https://doi.org/10.1007/978-3-319-90481-8_7
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