二维指向镜的成像特性分析  

Analysis of the Imaging Characteristics of the Two-dimensional Pointing Mirror

作　　者：李淑英[1] 周世椿[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083

出　　处：《光电工程》2008年第5期17-22,共6页Opto-Electronic Engineering

摘　　要：目标搜索和跟踪一体化的光电探测系统常采用二维指向镜与面阵凝视成像探测相结合的技术方案。本文在光学矢量反射理论的基础上,对二维指向镜的成像特性进行了分析,给出了扫描轨迹的计算,指向镜摆动角度与视线角之间的关系。当指向镜绕两轴转动时,物体反射像也随着指向镜的转动产生像旋,扫描轨迹呈非线性变化。文中讨论了多元探测器像旋角的计算和对跟踪系统的影响,为软件校正像旋和二维控制实现精确跟踪提供理论参考价值。Two-dimensional pointing mirror as well as detector array is often used in the searching and tracking system. Based on the vector theory of optical reflection, the imaging characteristics and scanning traces of the two-axis pointing mirror are studied. The relationship between image rotating angle and the pointer＇s elevation and azimuth is analyzed in detail. When the pointer rotates around the axes which aren＇t parallel to the pointer＇s surface, the images on the detector rotate as well and the trace of the pointer is non-linear. Furthermore, the calculation methods for image rotation of detector array and the influence of rotation on the tracing system are also given.

关 键 词：二维指向镜 像旋 扫描轨迹 多元探测器 

分 类 号：TP73[自动化与计算机技术—检测技术与自动化装置]