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介绍了星载原子钟性能评估指标——频率准确度、稳定度、漂移率的定义及计算方法,基于IGS(international GNSS service)卫星钟差数据,对GPS星载原子钟的性能指标进行了分析。其中,基于Hadamard方差方法的稳定度分析结果表明,GPS Block IIR星载铷原子钟天稳已经处于1～3×10-14的水平。
Abstract：The definition and calculation methods for the frequency accuracy,stability and drift rate of GPS on-board clocks are introduced.The performance indices of GPS on-board clocks are analyzed based on the IGS(international GNSS service)precise clock data.The results based on the hadamard variance show that the stability(? =1 d) for the Rb clocks of GPS Block IIR satellites is about 13?10-14.
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基本信息:
DOI：10.13875/j.issn.1674-0637.2010.02.007
中图分类号:TM935.115
引用信息:
[1]贾小林,冯来平,毛悦,等.GPS星载原子钟性能评估[J].时间频率学报,2010,33(02):115-120.DOI:10.13875/j.issn.1674-0637.2010.02.007.
基金信息:
中国科学院知识创新工程重要方向资助项目(KJUX2-YW-T12)