The high-precision ground-based timing system Dunhuang timing platform project can achieve national soil coverage of long wave timing signals upon commencement of construction
CCTV news: The construction of the Dunhuang Time Service Platform project of high-precision ground-based time service system, a major national science and technology infrastructure project undertaken by the National Time Service Center of the Chinese Academy of Sciences, started yesterday. This marks a crucial step for China in promoting the nationwide coverage of long wave timing signals and improving the safety and reliability of time usage in important areas.
The Dunhuang timing station is located in the northeast of Dunhuang City, with a construction period of 3 years. The construction content will include an enhanced Roland transmission system, an antenna system with a radius of 300 meters and a tower height of 278 meters, and the construction of a timing monitoring station in the urban area of Dunhuang City. At present, the enhanced Roland time service station is the most reliable ground-based long wave time service means. By building three long wave time service stations in Korla, Xinjiang, Dunhuang, Gansu, and Naqu, Xizang, combined with the existing long wave time service system, China can realize the nationwide coverage of long wave time service signals. Meanwhile, through differential technology, the accuracy of long wave timing can be improved to the level of hundreds of nanoseconds, reaching an international leading level. In the future, relying on a high-precision ground-based timing system, combined with the BeiDou satellite navigation timing system and the high-precision time-frequency experimental system of the space station, China will take the lead in building a unique national timing system in the world that is three-dimensional, mutually reinforcing, and integrated.
![The high-precision ground-based timing system Dunhuang timing platform project can achieve national soil coverage of long wave timing signals upon commencement of construction](https://a5qu.com/upload/images/7db012612c07465dbbd1e2e6e41d3872.jpg)