NTSC Research Team Realizes Strontium Optical Lattice Clock with Uncertainty of 2×10-18
Recently, the Strontium optical lattice clock research team led by Prof. CHANG Hong from the National Time Service Center (NTSC) of the Chinese Academy of Sciences (CAS) successfully developed a strontium optical lattice clock with both frequency stability and systematic uncertainty better than 2×10⁻¹⁸.
06 10, 2025
NTSC Researchers Observed Time Crystal in Spin Maser
A joint research team of the National Time Service Center (NTSC) of the Chinese Academy of Sciences (CAS) and Shanghai Jiao Tong University observed time crystal in a spin maser system.
05 09, 2025
Researchers Realize Quantum Microwave Photonic Mixer Featuring High Linearity and Dual Outputs
The research team led by Prof. DONG Ruifang from the National Time Service Center (NTSC) of the Chinese Academy of Sciences (CAS) has achieved nonlocal frequency mixing of two spatially separated RF signals using quantum entanglement. The team employed an energy-time entangled biphoton source as the optical carrier, leveraging the intrinsic time-correlation between photon pairs to overcome traditional spatial constraints.
04 30, 2025Developed by the research team of the department of Time and Frequency Measurement and Control, the National Time Service Center (NTSC)of the Chinese Academy of Sciences, the "Pakistan MM1 Project Satellite-based Augmentation System (SBAS) timing subsystem " passed the test in January this year, and began to provide stable service in Pakistan in August after two years of development.
From 5th to 9th August, 2024, the National Time Service Center (NTSC) of the Chinese Academy of Sciences(CAS) and The United Nations African Regional Centre for Space Science and Technology Education - English (UN-ARCSSTE-E) jointly organized the International BeiDou/GNSS Training Workshop in Obafemi Awolowo University Campus, Ile-Ife, Nigeria, which established BeiDou’s closer technical exchange and communication with African countries in satellite navigation field.
Two popular science books nominated by the National Time Service Center,"Navigation Stars and Sinan" and "Sky Gazing(chinese version)" was selected in the list of "Outstanding Popular Science Books of Shaanxi Province in 2023" (15 in total) in the 2023 Shaanxi Province Outstanding Popular Science Book Selection.
70th Anniversary of Beijing Time---National Time Service Center
In March 2001, the Shaanxi Astronomy Observatory was renamed as the National Time Service Center (NTSC) with the approval of the State Commission Office of Public Sector Reform. Since then, NTSC has been focusing on time service: satisfying the urgent needs of China’s development for different precision especially high precision time service
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70th Anniversary of Beiing Time---Low Frequency Time-code Time Service Station
The National Time Service Center (formerly Shaanxi Astronomy Observatory) began to study the low-frequency time code timing technology in 1993. In 1999, a practical test platform was built in Pucheng, Shaanxi Province. In 2007, a high-power low frequency time-code time service station was set up in Shangqiu, Henan Province, the call sign is BPC.
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70th Anniversary of Beijing Time---Long Wave Time Service Station
In order to meet the requirements of measurement and control of satellite launch and space technology development, the development and construction of the long wave time service station (326 project) was launched officially after the approval of the State Council in June 1973.
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70th Anniversary of Beijing Time---Shaanxi Astronomy Observatory
In the 1960s, due to the demands of large-scale economic construction, China decided to build a special time service station in the hinterland of China as soon as possible.
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