Research on atomic time algorithm of time and frequency standard

This paper mainly researches atomic time algorithm, and its influence on atomic time scale level. With the improving of atomic clock level internationally, atomic time scale system is continuously promoted. Different atomic time scale system needs different algorithm. An atomic time algorithm should be applied in fit time scale system. ALGOS is adopted by BIPM to calculate TAI. AT1 algorithm and an algorithm based on new TA(NIM) system whose H-maser is steered by Cs fountain clock are mainly introduced in this paper according to the improvement of atomic time scale in NIM. A specific atomic time scale should adopt suitable algorithm, only in this way, we can get a better atomic time scale.