星间测量基线偏差搜索算法及误差分析  

Baseline deviation search algorithm for inter-satellite measurement

作　　者：戴杨峰 李明成 王春晖 DAI Yangfeng;LI Mingcheng;WANG Chunhui(School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学航空航天学院,杭州310027

出　　处：《中国空间科学技术（中英文）》2024年第4期173-183,共11页Chinese Space Science and Technology

基　　金：国家自然科学基金(62073289)。

摘　　要：基线偏差会在相对角度测量结果转换到主星坐标的过程中引入显著误差,针对这一问题在方位角和俯仰角(-60°,+60°)范围内对基线偏差引入的转换偏差进行了研究,并提出了一种测量基线在轨校准的搜索算法。该方法利用卫星搭载的近距离高精度感知系统,同时对从星位置进行感知测量,以近距离感知系统作为校准数据源,通过步长加速算法搜索基线偏差并校准,使得本系统感知结果与校准数据源同步,从而达到测量基线校准的目的。搜索完成后的方位角与俯仰角的转换偏差均优于0.012°,低于热噪声引入的最大测量误差。The baseline deviation introduces significant errors in the process of converting the relative angle measurement results to the main star coordinates.To solve this problem,the conversion deviation introduced by the baseline deviation in the range of azimuth and elevation angles(-60°,+60°)was studied,and a search algorithm for on-orbit calibration of the measurement baseline was proposed.This method used the close-range high-precision perception system carried by the satellite,and at the same time performed perception measurement of the slave star’s position,took the close-range perception system as the calibration data source,then searched for the baseline deviation and calibrated through the step acceleration algorithm,so that the perception results of the system were synchronized with the calibration data source,so as to achieve the purpose of measuring baseline calibration.After the search algorithm,the conversion deviation of azimuth angle and elevation angle is better than 0.01°,the maximum is 0.012°,which is lower than the maximum measurement error caused by thermal noise.

关 键 词：星间测量 基线偏差 相对角度测量 转换误差 步长加速法 

分 类 号：V11[航空宇航科学与技术—人机与环境工程]