近场被动式毫米波成像准光路系统设计  

Design of quasi-optical system for near-field passive millimeter wave imaging

作　　者：饶蕾[1] 郑健[2] 李志豪[2] 

机构地区：[1]上海电机学院电子信息学院,上海201306 [2]公安部第三研究所刑侦事业部,上海200031

出　　处：《浙江大学学报（理学版）》2016年第3期310-315,共6页Journal of Zhejiang University（Science Edition）

基　　金：上海市科委项目(13231203100);上海市教育委员会科研创新项目(14YZ162);上海市高校青年教师培养资助计划项目(14AZ20);上海市大学生创新活动计划项目(G2-13DXSCX-064);上海电机学院计算机应用技术重点学科项目(13XKJ01)

摘　　要：近场被动式毫米波成像是一种针对人员藏匿武器的最有前景的安全检查技术.基于几何光学法和高斯波束法,设计了近场被动式毫米波成像的准光路系统.该系统采用一对平面反射镜分别对目标平面垂直方向和水平方向进行一维扫描,由一块双折射面透镜对毫米波波束聚焦成像,用工作波长为3mm的辐射计作为探测器接收毫米波辐射信号.最终实现与目标平面距离小于1.5m、成像面积为1.2m×0.6m、空间分辨率为30mm的准光路系统.理论分析和仿真结果证实该系统具有良好的成像质量,满足设计指标要求.该系统可应用于公共检查场所,实现非接触式安全检查.符合近场被动式毫米波成像重量轻、结构紧凑、成像质量高的发展方向.Near-field passive millimeter wave imaging is one kind of the most promising technologies for the safety inspection of concealed weapons.A quasi-optical system of near-field millimeter wave imaging is designed based on geometrical optics and Gaussian beam method.The system uses a pair of planar mirrors to scan the target plane along the vertical and the horizontal direction,respectively.A double refraction lens is used to realize focus imaging of millimeter wave.Meanwhile,it adopts a bolometer working at 3mm wavelength as a detector to receive millimeter wave radiations.The distance between the target plane and the system is less than 1.5m,the imaging area is1.2m×0.6mand the spatial resolution is 30 mm.Theoretical analysis and simulation results show that the system has good imaging quality and meets the design index.It can be applied for public inspection in particular for non-contact safety inspection,and adapts to the development of near-field passive millimeter wave imaging system which features light weight,compact volume and high imaging quality.

关 键 词：几何光学 高斯波束 准光路系统 毫米波成像 

分 类 号：TN015[电子电信—物理电子学] TB811.3[一般工业技术—摄影技术]