红外地平仪地球模拟器光学校准精度分析  

Optical calibration accuracy analysis for Infrared horizon of the earth simulator

作　　者：吕银环[1] 童广辉[1] 崔维鑫[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：《光学技术》2012年第4期392-397,共6页Optical Technique

摘　　要：针对适用于双圆锥扫描红外地平仪地面检测体积相对较大的地球模拟器,使用两台电子经纬仪建立三维坐标测量系统,采用全测角的方法计算并实时显示被测点的三维坐标值,可以大大提高光学校准精度。基于坐标值的计算以及地球模拟器的模拟原理,首先对地球模拟器进行精密校准,然后基于误差传递公式计算直角坐标的校准测试误差,对光学校准精度进行分析,最终实现红外地球敏感器姿态角测量的误差分析。计算与实际测量结果表明,通过使用实时三维测量系统对地球模拟器进行精密校准后,双圆锥扫描红外地平仪的姿态角模拟测试误差可降低到0.01°以下。验证了该测量系统在大型航天地面检测设备中的有效性与实用性。Three-dimensional coordinate measuring system is established by using two electronic theodolites, three-di- mensional coordinates are calculated from full angle measurement and displayed in real-time, above steps can greatly im- prove the optical calibration accuracy. Precision calibration on the Earth Simulator is made based on coordinate value cal- culation and the earth simulator principle, then calibration testing error for Cartesian coordinates is calculated following error propagation formula, and the optical calibration accuracy is analyzed, ultimately error analysis of the attitude angle measurement for the infrared horizon sensor is achieved. Calculation and actual measurement results show that the atti- tude angle simulation error of the double conical infrared scanning horizon sensor can be reduced to value less than 0. 01°, after precision calibration on the earth simulator by using real-time three-dimensional measurement system, which verify the effectiveness and practicality of this measurement system in large-scale aerospace ground testing equipment.

关 键 词：三维坐标实时测量系统 光学校准精度 姿态角测量 

分 类 号：P207.1[天文地球—测绘科学与技术]