红外与毫米波学报, 2011, 30 (5): 419, 网络出版: 2011-10-13
被动毫米波焦面阵成像技术
Passive millimeter wave focal plane array imaging technology
被动毫米波成像 焦平面阵列 基模高斯波束法 介质棒天线 毫米波辐射计 passive millimeter wave imaging focal plane array fundamental Gaussian beam method dielectric rod antenna millimeter wave radiometer
摘要
以安全检查为背景,研究了近距离被动毫米波焦面阵成像的关键技术.其中包括采用基模高斯波束法结合几何光学法分析系统准光路;设计多波束宽角扫描透镜天线;提出一种新型结构的介质棒天线,该天线易于排成紧密阵列且能够为透镜提供良好的照射;研制工作于Ka频段的高灵敏度、小型化直接检波式辐射计等.给出了20通道被动毫米波焦面阵成像系统的实验结果,表明该系统可用于室内近距离探测人体隐匿物品.
Abstract
Under the background of safety inspection, the key technologies of near-range passive millimeter wave focal plane array imaging are studied. The analysis of the system quasi-optics were carried out using fundamental Gaussian beam method combined with geometrical optics method. A multi-beam wide-angle scanning lens antenna was designed. A new dielectric rod antenna was devised, which is prone to be aligned in close arrays and provide good radiation to the lens. Miniaturized direct-detection radiometers were fabricated with high-sensitive in Ka-band . Experimental results of the 20-channel passive millimeter wave focal plane array imaging system are presented, which can be used to detect hidden objects on human bodies in near range indoors.
王楠楠, 邱景辉, 张鹏宇, 邓维波. 被动毫米波焦面阵成像技术[J]. 红外与毫米波学报, 2011, 30(5): 419. WANG Nan-Nan, QIU Jing-Hui, ZHANG Peng-Yu, DENG Wei-Bo. Passive millimeter wave focal plane array imaging technology[J]. Journal of Infrared and Millimeter Waves, 2011, 30(5): 419.