基于北斗卫星精密星历的中高轨望远镜测量精度标定方法  

A Method for Evaluating Medium and High-earth Orbit Object Telescope's Precision by Beidou's Precise Ephemeris

作　　者：陆长明[1,2,3] 高昕[2] 李希宇 谢梅林[1] 李治国[1] LU Chang-ming;GAO Xin;LI Xi-yu;XIE Mei-lin;LI Zhi-guo(Xi'an Institute of Optics and Precision Mechanics of CAS,Xi'an 710119,China;Beijing Institute of Track and Telecommunication Technology,Beijing 100094,China;University of Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院西安光学精密机械研究所,西安710119 [2]北京跟踪与通信技术研究所,北京100094 [3]中国科学院大学,北京100190

出　　处：《光子学报》2020年第10期120-131,共12页Acta Photonica Sinica

基　　金：国家高技术研究发展计划重大专项工程(No.2015AA8085038)。

摘　　要：针对中高轨碎片光电观测望远镜(简称中高轨望远镜)野外精度标定手段有限的难题,理论分析利用国产北斗导航卫星系统鉴定天文定位和轴系定位测量精度的方法,通过分析卫星覆盖性、轨道精度和亮度等因素研究方法的可行性.对定期公布的数据间隔约为5 min的精密星历进行拉格朗日插值处理,并进行坐标转换,解算望远镜观测时刻在天球赤道坐标系中卫星相对测站的视赤经和视赤纬以及卫星在测站坐标系中的方位值和俯仰值,作为理论真值鉴定天文定位和轴系定位测量精度.利用此方法检测某中高轨望远镜天文定位精度优于2″,轴系定位精度优于7″.In order to solve the lacking of calibration means when working in the field,the Beidou Navigation Satellite System(BDS)is used to evaluate telescopes'astronomy and axis orientation precision,which survey the Medium And High Earth Orbit Objects(MHEO).This research is dedicated to deduce the principle of astronomy and axis orientation,and testify the feasibility of evaluating the electro-optical telescope's accuracy with BDS by analysising the satellites'coverage,orbit pricision and brightness,which has big diameter.Firstly,we interpolate the regular BDS precise ephemeris by Lagrange polynomial,whose data interval is 5 minutes.With coordinate conversion,we get the apparent ascension and apparent declination in the agreement celestial coordinate system,azimuth and pitch in the station coordinate system,which are the true value for astronomy and axis orientation precision evaluation.A MHEO telescope's astronomy orientation precision is superior to 2″and axis orientation precision is superior to 7″by this method.

关 键 词：北斗导航卫星系统 光电望远镜 指向测量精度 天文定位 轴系定位 

分 类 号：V11[航空宇航科学与技术—人机与环境工程]