The optimization of satellite orbit for Space-VLBI observation  

作　　者：Lei Liu Wei-Min Zheng 

机构地区：[1]Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China [2]Key Laboratory of Radio Astronomy,Chinese Academy of Sciences,Nanjing 210008,China [3]Shanghai Key Laboratory of Space Navigation and Positioning Techniques,Shanghai 200030,China

出　　处：《Research in Astronomy and Astrophysics》2021年第2期97-104,共8页天文和天体物理学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11903067,11973011,11573057,U1831137 and 11703070);Shanghai Outstanding Academic Leaders Plan,the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB23010200);the Shanghai Key Laboratory of Space Navigation and Positioning Techniques(ZZXT-201902)。

摘　　要：By sending one or more telescopes into space,Space-VLBI(SVLBI)is able to achieve even higher angular resolution and is therefore the trend of the VLBI technique.For the SVLBI program,the design of satellite orbits plays an important role for the success of planned observation.In this paper,we present our orbit optimization scheme,so as to facilitate the design of satellite orbits for SVLBI observation.To achieve that,we characterize the uv coverage with a measure index and minimize it by finding out the corresponding orbit configuration.In this way,the design of satellite orbit is converted to an optimization problem.We can prove that,with an appropriate global minimization method,the best orbit configuration can be found within the reasonable time.Besides that,we demonstrate that this scheme can be used for the scheduling of SVLBI observations.

关 键 词：instrumentation interferometers-techniques high angular resolution-methods numerical-space vehicles INSTRUMENTS 

分 类 号：V412.41[航空宇航科学与技术—航空宇航推进理论与工程]