Global Satellite Navigation System Constellation Deployment Is Fully Completed

- Jun 23, 2020-

C114 News June 23 (Lin Xiang) At 9:43 this morning, the last satellite of the Beidou-3 Global Satellite Navigation System was successfully launched, which also means that the deployment of the constellation of the Beidou-3 Global Satellite Navigation System has been completed. It will also further expand Beidou's global service application scenarios.

C114 News June 23 (Lin Xiang) At 9:43 this morning, the last satellite of the Beidou-3 Global Satellite Navigation System was successfully launched, which also means that the deployment of the constellation of the Beidou-3 Global Satellite Navigation System has been completed. It will also further expand Beidou's global service application scenarios.

Perfect ending: richer global service application scenarios

In 2009, the construction of Beidou No. 3 Project officially started. According to the plan, 18 Beidou-3 satellites will be launched around the end of 2018, covering countries along the “Belt and Road”; by 2020, more than 30 satellites will be launched to achieve global service capabilities.

This perfect ending also means that the deployment of the Beidou-3 global satellite navigation system constellation has been fully completed, and it also further expands Beidou's global service capabilities.

The Beidou-3 global satellite navigation system is composed of three different orbit satellites, including 24 MEO satellites, including MEO satellite (Earth Central Orbit Satellite), IGSO satellite (Tilt Geosynchronous Orbit Satellite) and GEO satellite (Geostationary Satellite). 3 IGSO satellites and 3 GEO satellites.

Among them, GEO satellites are stationed quietly in the space of 36,000 kilometers above the earth, and have an important mission-to provide enhanced services for the improvement of the Beidou navigation system's technical indicators. They are also affectionately known as "Jixing". This successful launch was the last satellite in the "Jixing" family.

The data shows that the satellite platform used by Jixing is China's large-scale satellite platform in active service. It has strong carrying capacity and has six major radio navigation, radio determination, satellite-based enhancement, precision single-point positioning, power enhancement, time synchronization between stations and positioning. This ability can provide navigation and enhanced services for users in China and surrounding areas.

At the same time, the Jixing family has inherited the most distinctive features of the Beidou system, active positioning and short message communication. Active positioning, that is, the use of radio determination technology, through the cooperation of two GEO navigation satellites, can not only answer the user "Where am I", but also tell the relevant units concerned about the user's whereabouts "Where is the user", so in search and rescue, fishery, etc. The field is widely used as a "clever eye" to ensure the safety of people's livelihood; the short message communication of Beidou-3 also plays a huge role. With the help of GEO satellites, the information transmission capability of Beidou-3 system has been increased from 120 Chinese characters to 1200 at a time. Chinese characters can also send pictures and other information, the application scenarios are more abundant.

In addition, the service capacity of Beidou No. 3 is 10 times greater than that of Beidou No. 2. In the fields of communication, electricity, finance, surveying and mapping transportation, fishery, agriculture, forestry, etc., more people can enjoy the inclusive services of Beidou navigation system.

In fact, since Beidou has provided global services, the confidence of various industries in the country to apply Beidou has doubled. Beidou's converged applications are also expanding. In the emerging applications of the Industrial Internet, the Internet of Things, and the Internet of Vehicles, innovative applications such as autonomous driving, automated parking, and automated logistics are emerging in endlessly.

With the advent of the 5G commercial era, Beidou is accelerating integration with new technologies such as next-generation communications, blockchain, and artificial intelligence. Beidou's new application models, new formats, and new economies are constantly emerging.

"Autonomous and controllable" to expand the circle of friends

The Beidou navigation system provides time and space benchmarks for national security, social and economic development, and people's lives. It is critical to the importance of the country and people's lives. The core technology must be firmly in the hands of the Chinese.

"When the entire Beidou system was built, in fact, we have always been based on independent and controllable products on the planet, key products, and components have adhered to the path of localization. This original intention, we have always insisted." Beidou satellite navigation system project Xie Jun, deputy chief designer, said in an interview with CCTV that by the time of Beidou No. 3, we have fully realized the localization of 100% of the satellite products.

It is understood that during the development of the Beidou-3 system, hundreds of key technologies were conquered, and technological breakthroughs were achieved in the three aspects of inter-satellite links and signal design.

Xie Jun emphasized at the same time: "This system is a long-term and stable service infrastructure. It is such a system. Then in the middle of the next ten, twenty and thirty years of operation, then these products have been updated and replaced. It must be based on our own capabilities and independently designed and developed independently. Only in this way can the security of the country have a basic guarantee for the development of the entire society."

With the pace of Beidou system global networking, Beidou chip R&D and production technology has gradually matured. From the initial all imports to the current independent research and development, from the follow-up study of the year to the current leading position, domestic Beidou chips gradually replace foreign products and realize industrialization.

Recently, the "2020 White Paper on the Development of China's Satellite Navigation and Location Services Industry" released by the China Satellite Navigation and Positioning Association shows that by the end of 2019, the sales of domestic Beidou compatible chips and modules have exceeded 100 million, and the total sales of domestic satellite navigation and positioning terminal products have exceeded 460 million units.

While fully realizing 100% localization of key components, the “friend circle” of Beidou application industry has gradually grown stronger. Today Beidou Industry has a long industrial chain, ranging from chips, antennas, modules, and board terminals to industry application solutions and the entire service system.

After years of development, Beidou has established a complete industrial chain in China, and has gathered a lot of practitioners in all links of the industrial chain. According to the statistics of the 2019 White Paper on China's Satellite Navigation and Location Services Industry, there are about 14,000 domestic companies engaged in satellite navigation and location services, and 46 listed companies in the industry.

Since Beidou wants to serve the world, it is necessary to go out and bring out excellent Beidou products and services. The data shows that as of December 27, 2019, domestic Beidou basic products have been exported to more than 120 countries and regions. Based on Beidou's land confirmation, precision agriculture, digital construction, smart ports, etc., it has been used in ASEAN, South Asia, Eastern Europe, and Western Asia. , Africa, etc. have been successfully applied.