原子时算法分析与对比  

Comparison among Algorithms for International Atomic Time

作　　者：王锐 袁静 班亚 杨帆 罗浩 江力 罗亚雄 WANG Rui;YUAN Jing;BAN Ya;YANG Fan;LUO Hao;JIANG Li;LUO Ya-xiong(Chongqing Measure Quality Detection Institute,Chongqing 401123,China;cole Polytechnique Fédérale de Lausanne,Lausanne,CH 1015,Switzerland)

机构地区：[1]重庆市计量质量检测研究院,重庆401123 [2]瑞士洛桑联邦理工大学,Lausanne,CH 1015,Switzerland

出　　处：《计量学报》2020年第3期363-368,共6页Acta Metrologica Sinica

基　　金：重庆市产业类重大主题专项(cstc2018jszx-cyztzxX0032);重庆市科学技术局自然科学基金面上项目(cstc2019jcyj-msxmX0783,cstc2019jcyj-msxmX0783);重庆市科研机构绩效激励引导专项(cstc2018jxjl140004)。

摘　　要：原子时算法是得到一个高可靠性,高准确性,长期稳定的时间尺度的重要因素。详细介绍了几种经典且广泛使用的原子时算法,从理论上分析了ALGOS算法、Kalman算法和AT1算法数学模型,并且根据对算法过程的研究,对比得到了各算法的优缺点。分析得出:ALGOS和AT1是经典的加权平均算法;Kalman和AT1是实时性的算法;Kalman滤波算法能更好地处理噪声的影响,适用于卫星导航系统。The algorithm for the international atomic time(TAI)is an important factor to guarantee the reliability,long-term frequency stability,frequency accuracy and accessibility of the scale.Several classical and most popular algorithms of atomic time scale were reviewed and introduced.ALGOS,Kalman,and AT1 algorithms were explained and mathematically analyzed.By comparing these three algorithms,it was concluded that main idea of ALGOS and AT1 is weighting average.AT1 is a real-time scale and ALGOS is a deferred-time scale.The influence of noises can be better dealt with by Kalman and Kalman is more applicable for satellite navigation system.

关 键 词：计量学 原子时 时间尺度 ALGOS算法 KALMAN算法 AT1算法 

分 类 号：TB939[一般工业技术—计量学]