The library of National Time Service Center has a collection of more than 70,000 books, mainly scientific and technological documents, including books and periodicals in Chinese and foreign languages, proceedings of some domestic scientific and technological conferences, scientific and technological reports, foreign language materials of Russia, Germany, France and Japan, dissertations of National Time Service Center since 1984, etc., mainly involving time and frequency, physics, astronomy, communication, navigation, computer and other disciplines. Quantum frequency standard laboratory
The quantum frequency standard laboratory is mainly engaged in the development and related research of quantum frequency standards.
Director of Research Office: Researcher Zhang Shougang.
The main research directions are: 1, cesium atomic clock fountain clock, 2, new-type on-board atomic clock, 3, optically pumped cesium beam atomic clock, 4, strontium atomic clock, 5, overloaded narrow linewidth laser, 6, optical frequency comb, 7, optical fiber time-frequency transmission, 8, quantum time synchronization, 8, space time-frequency technology.
Punctuality theory and method laboratory
The research room of punctuality theory and method is mainly engaged in the research of punctuality theory, method and related applications. Total number 13, including researcher 1 person and 3 associate researchers.
Director of Research Office: Gao Yuping, researcher.
The main research directions are: time scale; Punctuality theory and method; Theory, method and application of pulsar timing: history of time science.
High precision time transfer and precise orbit determination
The high-precision time transfer and precise orbit determination laboratory mainly carries out high-precision time transfer and precise orbit determination technology and related scientific research. Total number 19, including 2 researchers and 6 associate researchers.
Director of Research Office: Researcher Yang Xuhai.
The main research directions are: high-precision time transfer and precise orbit determination technology, precise orbit determination theory and method, and related scientific research based on precise orbit determination. Specifically including:
1) High-precision time transfer and precise orbit measurement technology, mainly studying two-way satellite time-frequency transfer and forward orbit measurement technology based on it; Based on accurate time measurement, VLBI20 10 time delay measurement technology, pseudorange/carrier phase measurement technology, etc.
2) The theory and method of precise orbit determination mainly study the precise orbit determination method of artificial earth satellites (including navigation satellites, etc.). ); Research on spacecraft orbit determination and timing method, planet and its satellite calendar in deep space exploration.
3) Relevant scientific research based on precise orbit determination, mainly including the determination of earth orientation parameters (including universal time UT 1 parameters) based on VLBI; Research on sub-nanosecond precise timing method based on satellite navigation system.
Time and frequency measurement and control laboratory
The time-frequency measurement and control laboratory mainly carries out research in the field of time-frequency measurement and control. Total number 14, including researcher and associate researcher 1 person.
There are four researchers.
Director of Research Office: Researcher Li Xiaohui.
The main research directions are: high-precision time interval measurement methods, techniques and instruments, high-precision frequency measurement methods, techniques and instruments time-frequency.
Remote calibration method and technology of rate, atomic clock control method and technology, UTC(NTSC) remote replication technology and instruments.
Time service method and technology laboratory
Time service method and technology research room mainly carries out research on time service theory, method and technology, and establishes various time service means.
Director of research office: Huayu researcher
The main research directions are: timing theory, methods and technologies, digital TV time-frequency transmission, network time synchronization methods and technologies, and trusted time authentication based on information network.
Time user system laboratory
The time user system research room mainly carries out the research and development of standardized time unified system and user terminal equipment carried out by the National Time Service Center.
Director of Research Office: Hu Yonghui, researcher.
The main research directions are: standardized time unified system, software radio technology, weak signal detection technology and intelligent terminal technology.
Navigation and communication laboratory
The Navigation and Communication Research Office mainly conducts research in the field of satellite navigation.
Director of research office: researcher Lu.
The main research directions are: satellite navigation signal generation, transmission and reception processing technology, inter-satellite link signal synchronization, generation and evaluation technology, GNSS space signal quality evaluation technology, satellite navigation high-precision differential and integrity enhancement technology, GNSS compatibility and interoperability technology, and high-precision navigation timing signal generation and reception equipment development technology.
Time frequency reference laboratory
Time-frequency reference laboratory undertakes the generation and maintenance of standard time (punctuality) in China, and carries out related research work on punctuality technology. Total number 17, including 2 researchers and 4 associate researchers.
Director of Research Office: Professor Dong Shaowu
Main research direction: (1) time benchmark maintenance; (2) Performance analysis of atomic clock; (3) Time scale algorithm; (4)UTC(K) control; (5) time comparison and synchronization; (6) Satellite navigation system time; (7) Time interoperability of global navigation satellite systems; (8) Application of accurate time signal.
Timing department
Time service departments, namely BPL long-wave time service signal transmitting and broadcasting station, BPM short-wave time service signal transmitting and broadcasting station, and long-wave short-wave signal transmitting and broadcasting control room, are the institutions that the National Time Service Center undertakes the task of transmitting and broadcasting long-wave short-wave time service signals.
The scientific research objectives and tasks are: to undertake the transmission and broadcasting of long-wave and short-wave timing signals of BPL and BPM, and to undertake the operation and maintenance of related systems. Participate in the modernization and technical transformation of BPL long wave timing system. Carry out research on signal propagation, equipment improvement, broadcast control and other related applications. 201565438+1October 25 -28, led by the National Time Service Center of Chinese Academy of Sciences, the overall unit of the international GNSS monitoring and evaluation system (iGMAS), together with Shanghai Observatory, Xinjiang Observatory and Changchun Satellite Observatory of Chinese Academy of Sciences, and Russian experts, conducted a field investigation on the construction of GLONASS satellite navigation system. With the strong support of leaders and technicians of relevant units, the investigation task was successfully completed. This investigation is one of the contents of the Sino-Russian cooperation framework agreement on satellite navigation system. The establishment of a joint station between China and China is of great significance for expanding the tracking network of Beidou satellite navigation system and Russian GLONASS system, and improving the performance of Beidou satellite navigation system and GLONASS system.
From April 2065438 to April 2 1 23, 2005, the 9th International Satellite Navigation Forum and the first meeting of the Sino-Russian Working Group on Compatibility and Interoperability of Satellite Navigation were held in Moscow. The conference was hosted by the Russian Federal Space Agency and attended by a delegation of 24 experts from China Satellite Navigation System Management Office and domestic satellite navigation related fields. Dong Shaowu and Guang Wei from the National Time Service Center of Chinese Academy of Sciences attended the meeting as members of the China delegation.
On May, 2005 15438+0 1 day, the first international GNSS (Global Navigation Satellite System) space signal quality monitoring and evaluation (SMAS) seminar was held in Room 308, Qujiang International Conference Center, China. The conference attracted nearly 60 experts and scholars from the United States, Canadian, Russian, Japanese and China. Our experts represent researcher Lu from the National Time Service Center of Chinese Academy of Sciences, Professor Thomas A. Stansell from Stansell Consulting Company in the United States, and David Turner, Chairman of American A Group, as co-chairs.
From June 1 1 day to June 12, French Pierre and Marie Curie University (Paris VI) distinguished professor Claude Fabres were invited to visit the National Time Service Center for academic exchange. Professor Claude Fabres is the chairman of the French National Physics Teacher Qualification Examination Evaluation Committee, an academician of the American Optical Society and the French Optical Society, and a senior director of the French University Society. He was the president of French Optical Society (20-200911) and the editor-in-chief of European Physics Journal D (20-200812), and he has a very high academic position in the field of quantum optics. During the visit, Professor Claude Fabre also visited the quantum frequency standard laboratory, had in-depth discussions and exchanges with relevant researchers, and reached a preliminary intention on future scientific research cooperation.
From June 8th to12nd, a series of meetings, including the second preparatory meeting of the 10th General Assembly of the International Committee on Global Navigation Satellite Systems (ICG), were held in Vienna International Center, Austria. Representatives from the United Nations Office for Outer Space Affairs, China, the United States, the Russian Federation, Italy and Japan attended the meeting. Researcher Lu, deputy director of the National Time Service Center, and assistant researchers attended the meeting as members of the China delegation.
2015165438+1October 1-6, the 10th General Assembly of International Committee on Global Navigation Satellite Systems (ICG) was held in Boulder, Colorado, USA. The conference was hosted by the Space and Advanced Technology Office in the State Council, USA. More than 300 representatives from global and regional satellite navigation system providers such as the United Nations Office for Outer Space Affairs, the United States, the Russian Federation, the European Union, China, Japan and India, and other countries and organizations related to satellite navigation attended the meeting. The delegation of China was led by China Satellite Navigation System Management Office, headed by Director Ran Chengqi, and 9 domestic units *** 19 people attended the meeting. As the overall unit of the multilateral platform in China, the National Time Service Center of Chinese Academy of Sciences sent Lu, deputy director of the National Time Service Center, Yuan Haibo, an associate researcher, and attended the meeting.