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

被引：0

作者：

Lu C.-M. ^{[1
,2
,3
]}

Gao X. ^{[2
]}

Li X.-Y. ^{[2
]}

Xie M.-L. ^{[1
]}

Li Z.-G. ^{[1
]}

机构：

[1] Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an

[2] Beijing Institute of Track and Telecommunication Technology, Beijing

[3] University of Chinese Academy of Sciences, Beijing

来源：

Guangzi Xuebao/Acta Photonica Sinica | 2020年 / 49卷 / 10期

基金：

国家高技术研究发展计划(863计划);

关键词：

Astronomy orientation; Axis orientation; Beidou navigation satellite system; Electro-optical telescope; Orientation precision;

D O I：

10.3788/gzxb20204910.1012001

中图分类号：

学科分类号：

摘要：

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. © 2020, Science Press. All right reserved.

引用

共 19 条

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