零次差分CHAMP卫星简动力定轨和SLR轨道验证  

REDUCED-DYNAMIC ORBIT DETERMINATION OF CHAMP AND SLR VALIDATION

作　　者：柴强[1] 乔学军[1] 闵轩[2] 

机构地区：[1]中国地震局地震研究所,武汉430071 [2]武汉大学灾害监测与防治研究中心,武汉430079

出　　处：《大地测量与地球动力学》2011年第B06期81-84,共4页Journal of Geodesy and Geodynamics

基　　金：地震科技行业专项(200808080)

摘　　要：采用零次差分简化动力法对CHAMP卫星GPS相位观测资料进行精密轨道计算,并将计算结果与CHAMP快速轨道进行比对。结果表明X、Y、Z方向差值均方根为0.061 m、0.060 m与0.066 m,精度达到了厘米级;同时利用全球人卫激光观测数据对所求轨道进行验证,表明其精度优于20 cm。From the CHAMP GPS phase data, Bernese5.0 is used with the zero-difference reduced-dynamic methods to compute CHAMP satellite orbits. The RMS difference in X, Y, Z directions between the reduced - dy- namic orbits and the GFZ rapid science orbits are 0. 061m,0.060m,0. 066m, respectively. In general, the accuracy of the computed orbits is at the centimeter level. On the basis of the SLR residuals analysis, which are computed as the differences between the SLR measurements minus the corresponding distances between the SLR station and the GPS-derived orbit positions, the accuracy of orbits is better than 20 centimeter level.

关 键 词：人卫激光测距 零次差分简化动力法 CHAMP卫星 精密定轨 快速轨道 

分 类 号：P228.1[天文地球—大地测量学与测量工程]