两种精密钟差产品系统噪声分析System noise analysis of two kinds of precise clock error products
孙大伟,贾小林,艾青松,方燕,杨洪国
摘要(Abstract)：
针对精密定轨与时间同步(ODTS)系统噪声难以准确计算的问题,该文选取了多台外接高精度主动型氢原子频标的监测站,通过对不同监测站钟差作差的方法对系统噪声进行了测试与分析。分别对国际GNSS服务(IGS)和德国地学中心分析中心(GFZ)提供的精密钟差产品进行ODTS系统噪声分析,分别采用IGS钟差产品和GFZ钟差产品进行了实验。结果表明,用阿兰方差表征ODTS系统噪声对在轨原子钟性能评估的影响,系统噪声的万秒和天稳定度均优于卫星钟设计稳定度,使用IGS与GFZ提供的精密钟差产品可以有效对星载原子钟在轨性能进行评估。
关键词(KeyWords)： 系统噪声;钟差产品;精密定轨与时间同步
基金项目(Foundation):
作者(Author): 孙大伟,贾小林,艾青松,方燕,杨洪国
DOI: 10.16251/j.cnki.1009-2307.2019.03.025
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