Recently,utilizing multi-configurational Dirac-Hartree-Fock theory,the Sr optical lattice clock research team from the National Time Service Center of the Chinese Academy of Sciences accurately calculated the transition probabilities for the M1 transition between the 5d6s 3D1 state and the ground state 6s² 1S0,as well as the hyperfine-induced E2 transitions.The result published in Acta Phys...

A research team led by Prof. CHENG Fang from the National Time Service Center,Chinese Academy of Sciences focused on"Black Soil Wide-area Space-based Positioning Technology"proposed a new solution to support high-precision positioning of intelligent agricultural machinery operations,the Differential GNSS Visual Inertial Navigation System (DGVINS).The results was published in Measurement Scienc...

Recently, the time keeping group of NTSC proposed a new method for data fusion in the international time transfer links of the national time reference system. The new method, titled as "Time Transfer Link fusion algorithm based on wavelet multi-resolution analysis", was published in the internationally renowned journal, Measurement.As one of the most important part of UTC caculation, the theor...

Recently, the Circular T 435 bulletin of the Bureau International des Poids et Mesures (BIPM) published the 18 consecutive months frequency data of the cesium atomic fountain clock (No. NTSC-CsF2), marking that the cesium atomic fountain clock independently developed by the National Time Service Center(NTSC) of the Chinese Academy of Sciences(CAS) is recognized to participate in the calibrati...