被动毫米波焦面阵成像技术  

Passive millimeter wave focal plane array imaging technology

作　　者：王楠楠[1] 邱景辉[1] 张鹏宇[1] 邓维波[1] 

机构地区：[1]哈尔滨工业大学电子与信息工程学院,黑龙江哈尔滨150001

出　　处：《红外与毫米波学报》2011年第5期419-424,共6页Journal of Infrared and Millimeter Waves

基　　金：黑龙江省专项基金(FW05W109)

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.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.

关 键 词：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 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]