Researchers from the NTSC Completed the Verification of the New Shortwave Time Signal Modulation Scheme Based on Chirp
In order to enhance the anti-interference receiving ability of shortwave time signals and improve the performance of shortwave time service system, researchers from the National Time Service Center(NTSC) of the Chinese Academy of Sciences(CAS) began the research on the new system of shortwave time signals. The researchers proposed to introduce spread spectrum technology into BPM shortwave time service system and achieved a new shortwave time signal modulation scheme (DCTCDM scheme) based on linear frequency modulation (Chirp).
12 17, 2024
Research on eLoran Demodulation Algorithm Based on Multiclass Support Vector Machine Achieves Important Results
Researchers from the National Time Service Center (NTSC) of the Chinese Academy of Sciences (CAS) proposed a demodulation algorithm based on the multiclass support vector machine (MSVM).
12 06, 2024
NTSC Researchers Accurately Calculated Hyperfine-Induced 5d6s3D1,3-6s2 1S0 E2 Transitions and Hyperfine Constants in Alkaline Earth Metal Atoms
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.
10 24, 2024Developed 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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