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测绘学报  2014 

不同观测技术的Jason-2卫星精密定轨评估

, PP. 796-802

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Abstract:

针对GPS、SLR和DORIS三种不同手段的各自定轨精度问题,本文基于不同的轨道评估方法进行了深入分析。以JASON-2卫星为例,分析了姿态模型误差及其对定轨精度的影响,分别讨论了GPS、SLR和DORIS的定轨策略和定轨精度,并基于轨道评估结果进行了轨道叠加。基于实测数据进行了试验,试验结果表明,JASON-2卫星姿态模型误差对DORIS、GPS和SLR轨道影响分别为0.040、0.036和0.033m;DORIS定轨结果优于GPS和SLR,SLR定轨精度最差;基于SLR验证和轨道重叠结果加权,对GPS、SLR和DORIS轨道进行轨道叠加,其精度一致,通过与JPL轨道比较,其径向精度为2cm。

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