[The newspaper went to Shanghai correspondent Liu Yang] On May 23, the 8th China Satellite Navigation Academic Annual Meeting with the theme of positioning and interconnection of all things was held in Shanghai. The detailed and well-conceived Beidou Navigation System Global Network was announced at the meeting. Plan and timetable. According to Global Times reporters, in addition to the construction of the Beidou constellation that can cover the world in space, China has also built a BeiDou ground-based augmentation system that can significantly enhance navigation performance on the ground. With the development of these two large networks, Beidou's navigation accuracy will be greatly improved. It is no longer a dream for the Chinese people to enjoy centimeter-level navigation services on China’s national territory. This year marks the beginning of the global deployment of Beidou navigation satellites. The outside world is very concerned about the launch plan of Beidou 3, a new generation of the Beidou satellite navigation system. According to the launch plan announced by the Chinese party at this year’s annual meeting, from this year to 2020, China will send nearly 30 Beidou satellites of various types to the orbit and provide users with a high level of global coverage. Navigation service. Wang Li, chairman of the China Satellite Navigation System Committee, said that the current Beidou system has provided stable and reliable space-time information services for users in the Asia-Pacific region, 15 satellites are operating on-orbit steadily, and 5 new generation BeiDou satellites have completed on-orbit debugging and will soon be on-grid. On this basis, 6-8 satellites will be launched this year; 2018-2020 will also launch more than 20 satellites. The director of China Satellite Navigation System Management Office Rong Chengqi listed a detailed list for the Beidou satellite launch plan in the annual meeting report: in 2017, it plans to launch 6-8 Beidou No. 3 MEO satellites; in 2018, it will launch about 10 Beidou No. 3 MEO satellites. And a Beidou-3rd GEO satellite; 2019-2020, launch 6 Beidou-3 MEO satellites, 3 Beidou-3 IGSO satellites and 2 Beidou-3 GEO satellites. Yang Hui, chief instructor of the satellite subsystem of the Beidou Satellite Navigation System, told Global Times that a series of launches this year will take a double-star approach, which will greatly increase the efficiency of the satellite network. In addition to the construction of heaven, China also builds a Beidou augmentation system on the ground. According to Yu Chengzhi, China has completed the construction of the first phase of the BeiDou Ground-based Reinforcement System (150 frame network reference stations, 1,200 enhanced density network reference stations, a national integrated data processing center, and 6 industrial data processing centers). In 2018, the construction of the second stage of the BeiDou Ground-based Reinforcement System will be completed, and the positioning accuracy of the meter grade and decimeter grade covering the major regions of the country, as well as the test broadcast of the centimeters of the encrypted coverage area and the millimeter-level correction of the post-processing will be completed. On the big screen set up by Chihiro Positioning Company, which was responsible for the construction of the BeiDou Ground Improvement System, Global Times reporters saw a map of China marked with dots of different colors. In some areas, the intensity of ground-based reinforcement systems is likely to make dense People with phobia feel shocked. According to field staff, the green dots in the figure represent 150 frame network reference stations, and the blue dots represent 1200 enhanced density network base stations. It is understood that the current Chihiro location can provide navigation and location services that meet a variety of needs. Among them, Liaobu (real-time meter-level positioning service) covers an area of ​​11.6 million square kilometers, realizes nationwide coverage, and extends to some sea areas; Zhiken (real-time centimeter-level positioning service) can serve autonomous driving, autonomous drone flight, and future The current coverage of robots is 2.6 million square kilometers. The regions that can provide centimeter-level services today are mainly concentrated in economically developed areas such as the southeast coast. See Micro offers a static millimeter-level calculation capability that can be used in geological landslide monitoring, monitoring of dangerous houses, and monitoring of high-grade railway subsidence. Global Times reporters have seen from this electronic map that the construction density of ground-based reinforcement facilities in the southeastern coastal area is much higher than in other regions. The staff member stated that they plan to cover centimetres in Yunnan, Guizhou, Sichuan, Shaanxi, Guangxi, and Xinjiang this year, and then gradually achieve centimeter-level coverage across the country. ▲ JZW-I Catenary Integrated Operation Jzw-I Catenary Integrated Operation,Automotive Integrated Operation Vehicle,Custom Integrated Operation Vehicle,Multifunction Integrated Operation Vehicle CRRC SHANDONG CO., LTD. , https://www.crrcsd.com