中文摘要：

总结了大地测量和天体测量对SVLBI卫星的要求条件,分析了GNSS系统和SLR系统以及中继卫星对卫星的定轨精度、地面测控站对SVLBI卫星的跟踪效率,研究了SVLBI卫星对射电源的访问效率,及其与地面VLBI测站和VSOP2卫星形成的地-空和空-空基线观测射电源的分辨率等,以此为基础设计我国SVLBI卫星的轨道参数。

英文摘要：

SVLBI （space very long baseline interferometry） has a lot of important potential applications in geodesy and geodynamics, for which one of the most difficult tasks is to precisely determine the orbit of SVLBI satellite. According to the geodetic requirements of space VLBI satellite, several technologies that will possibly be able to determine the orbit of SVL- BI satellite are studied. The time efficiency of the joint observation and the efficiency of visiting the radio sources are analysed. And then, according to the kind of tracking satellites （such as GNSS, relay satellite） , and the requirements for geodetic and astrometric study, and also the geometry requirement of GNSS （GPS, GALILEO） satellite to track the space VLBI satellite, the six Keplerian elements of the space VLBI satellite are determined. The results are present finally.