CEI对静止轨道共位卫星的轨道确定

CEI-based Orbit Determination of Colocation Geostationary Satellites

摘要: 主要考察了CEI对静止轨道共位卫星的轨道确定能力。仿真结果表明,利用CEI对共位卫星进行定轨时,需采用基线阵列。对于110°E共位卫星采用三亚-昆明基线阵列、10 km基线和2 d的数据,可使绝对轨道精度达百米级;外推至14 d时,相对轨道精度保持在m级。同样,要使绝对和相对轨道精度达到相同的量级,对于80°E共位卫星,需选用昆明-三亚基线阵列、100 km基线和1 d的观测弧段;对于140°E共位卫星,需选用上海-三亚基线阵列5、0 km基线和2 d的观测弧段。

Abstract: CEI-based orbit determination precision of colocation geostationary satellites is discussed.The simulation results indicated that baseline array was needed in the orbit determination of colocation geostationary satellites.For 110°E satellites,when Sanya-Kunming baseline array,baseline 10 km in length and 2 d observation data were used,absolute orbit determination precision could reach to magnitude of 100 m,relative precision could reach to magnitude of one meter when the orbit was extrapolated to 14 d,while Kunming-Sanya baseline array,baseline 100 km in length and 1 d observation data for 80°E satellites,Shanghai-Sanya baseline array,baseline 50 km in length and 2 d observation data for 140°E satellites.