航天器间相对状态光学测量系统焦距动态校准  

A Dynamic Calibration Method of the Focal Length of the Spacecraft′s Relative State Measure System

作　　者：杜小平[1] 李珊[1] 赵阳[1] 曾德贤[1] 

机构地区：[1]装备指挥技术学院航天装备系,北京101416

出　　处：《装备指挥技术学院学报》2005年第5期56-59,共4页Journal of the Academy of Equipment Command & Technology

基　　金：国家安全重大基础研究项目

摘　　要：提出了一种航天器间相对状态光学测量系统焦距的动态校准方法.利用恒星相对于观测点的方位角和高低角实现对焦距的动态校准.介绍了焦距校准方法,推导了夹角测量公式、焦距校准公式、方位角和高低角测量公式.以大犬星座α星为目标星,利用地面原型试验系统对校准方法的正确性及可行性进行了验证.结果表明,用该方法对焦距校准后,航天器间相对状态测量系统对角度的测量精度有大幅度提高.This paper puts forward a dynamic calibration method for the focal length of the spacecraft＇s relative state measure system. The altitude angle and the azimuth angle between star and observation point are used to realize the dynamic calibration. The method of focal length calibration has been introduced. The formula of the focal length calibration, the measuring formula of the angle between stars, the measuring formula of the altitude angle and the azimuth angle have been deduced. The a star in the canis major is used as target star. The correctness and feasibility of the calibration method has been validated by the ground prototype test system. The results indicated that the angle measuring precision had been substantially improved after focal length calibration.

关 键 词：动态校准 焦距 方位角 高低角 

分 类 号：TP249[自动化与计算机技术—检测技术与自动化装置] V556.5[自动化与计算机技术—控制科学与工程]