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科学通报  2012 

海洋二号卫星SLR精密定轨

, PP. 3475-3483

Keywords: 海洋二号,卫星激光测距,精密定轨

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Abstract:

随着我国第一颗海洋动力环境卫星海洋二号(HY-2)的成功发射并正式投入使用,我国的海洋环境监测与海洋资源探测能力得到了进一步完善和提高.精密轨道跟踪和确定是海洋动力环境卫星的关键技术,也是有效利用包括雷达高度计在内的星载设备观测数据开展海洋科学研究的必备条件.本文介绍了我国首次HY-2卫星激光测距(SLR)国际联测的情况,采用动力学定轨方法,利用6个月的SLR实测数据进行了精密定轨,并通过内符合精度、与DORIS轨道的比较以及站星距检核等方法仔细分析了SLR定轨精度.处理结果表明,HY-2卫星SLR定轨的平均三维位置精度约为12.5cm,径向位置精度好于3cm.这项工作为SLR国际联测及精密定轨在我国对地观测卫星工程中的应用提供了成功范例.

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