The transformation between τ and TCB for deep space missions under IAU resolutions

作     者：Xue-Mei Deng 

作者机构：Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2012年第12卷第6期

页      面：703-712页

核心收录：

学科分类：07[理学] 070102[理学-计算数学] 0704[理学-天文学] 0701[理学-数学] 

基　　金：funded by the National Natural Science Foundation of China (Grant Nos. 11103085 and 11178006) 

主　　题：reference systems    time    method: analytical    method: numerical   space vehicles 

摘      要：For tracking spacecraft and performing radio science, the transformation between the proper time （τ） given by a clock carried onboard a spacecraft and the barycentric coordinate time （TCB） is investigated under IAU resolutions. In order to more clearly demonstrate manifestations of a physical model and improve computa- tional efficiency, an analytic approach is adopted. After numerical verification, it is confirmed that this method is adequate to describe a Mars orbiter during one year, and is particularly good at describing the influence from perturbing bodies. Further analyses demonstrate that there are two main effects in the transformation： the gravi- tational field of the Sun and the velocity of the spacecraft in the barycentric coordinate reference system. The combined contribution of these effects is at the level of a few sub-seconds.