李萌,呼延宗泊,穆文婷,李双钦,徐德艳

• 1:西安航天天绘数据技术有限公司
• 2:宇航动力学国家重点实验室
• 3:西安卫星测控中心

摘要(Abstract)：

针对IAU2006/2000A和IAU1976/1980岁差-章动模型中坐标转换方法的不同问题,该文对比了ICRS与FK5的变化,分析了5种典型卫星坐标转换和速度转换产生偏差的大小及原因,给卫星坐标转换提供了一个定量的参考范围,揭示了不同模型对不同类型卫星坐标转换产生的影响。两种岁差-章动模型下,卫星坐标转换后的方位之差为10mas量级,并且存在线性增长;地球自转角速度之差为-1.46×10-6″/s,并存在振幅增加的周期项;转换后卫星的位置偏差与其轨道高度正相关,自转轴方向的速度偏差对中高轨卫星最为明显。章动改正对坐标转换的影响约为天极偏差的10倍。

关键词(KeyWords)： 岁差-章动模型;坐标转换;天文参考系;章动改正;天极偏差

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李萌,呼延宗泊,穆文婷,李双钦,徐德艳

DOI: 10.16251/j.cnki.1009-2307.2019.03.022

参考文献(References)：

• [1]LIESKE J H,LEDERLE T,FRICKE W,et al.Expres-sions for the precession quantities based upon theIAU/1976/system of astronomical constants[J].Astronomy &Astrophysics,1977,58:1-16.
• [2]LIESKE J H.Precession matrix based on IAU/1976/system of astronomical constants[J].Astronomy &Astrophysics,1979,73(3):282-284.
• [3]SEIDELMANN P K.1980IAU theory of nutation:thefinal report of the IAU working group on nutation[J].Celestial Mechanics,1982,27(1):79-106.
• [4]WAHR J M.The forced nutations of an elliptical,rotating,elastic and Oceanless earth[J].GeophysicalJournal International,1981,64(3):705-727.
• [5]FRICKE W.Fundamental catalogues,past,present andfuture[J].Celestial Mechanics and Dynamical Astronomy,1985,36(3):207-239.
• [6]FEISSEL M,MIGNARD F.The adoption of ICRS on 1January 1998:meaning and consequences[J].Astronomy&Astrophysics,1998,331(3):33-36.
• [7]MATHEWS P M,HERRING T A,BUFFETT B A J.Modelling of nutation precession:very long baselineinterferometry results[J].Journal of GeophysicalResearch,2002,107(B4):3-10.
• [8]CAPITAINE N,WALLACE P T,CHAPRONT J.Expressions for IAU 2000precession quantities[J].Astronomy &Astrophysics,2003,412(2):567-568.
• [9]MCCARTHY D D.IERS Conventions(1989),IERStechnical note 21[R].Paris:Central Bureau of IERSObservatoire de Paris,1996:20-39.
• [10]MCCARTHY D D,PETIT G.IERS conventions(1992),IERS technical note 32[R].Frankfurt amMain:Verlag des Bundesamts für Kartographie undGeodsie,2003:33-56.
• [11]MCCARTHY D D,ERS conventions(1996),IERStechnical note 21[R].Paris:Central Bureau of IERSObservatoire de Paris,1996:20-39.
• [12]MCCARTHY D D,Petit G.IERS conventions(2003),IERS technical note 32[R].Frankfurt am Main:Verlagdes Bundesamts für Kartographie und Geodsie,2003:33-56.
• [13]PETIT G,LUZUM B.IERS conventions(2010),IERStechnical note 36[R].Frankfurt am Main:Verlag desBundesamts für Kartographie und Geodsie,2010:43-78.
• [14]CAPITAINE N,GUINOT B,SOUCHAY J.A non-rotating origin on the instantaneous equator:definition,properties and use[J].Celestial Mechanics,1986,39(3):283-307.
• [15]CAPITAINE N,GUINOT B,MCCARTHY D D.Definition of the celestial ephemeris origin and of UT1in the international celestial reference frame[J].Astronomy &Astrophysics,2003,412(2):567-568.
• [16]CAPITAINE N,CHAPRONT J,LAMBERT S,et al.Expressions for the celestial intermediate pole andcelestial ephemeris origin consistent with theIAU2000Aprecession-nutation model[J].Astronomy&Astrophysics,2003,400(3):1145-1154.
• [17]CAPITAINE N,WALLACE P T.High precessionmethods for locating the celestial intermediate pole andorigin[J].Astronomy &Astrophysics,2006,450(2):855-872.
• [18]GUINOT B.Basic problems in the kinematics of therotation of the earth[J].Proceedings of the Interna-tional Astronomical Union,1979,82(48):7-18.