2023-05-18 01:38:00
The picture shows the Long March 3B launch vehicle carrying out this launch mission. (Photo provided by the First Academy of Aerospace Science and Technology Group)
On the morning of May 17, my country successfully launched the 56th Beidou navigation satellite developed by the General Manager of the Fifth Academy of Aerospace Science and Technology Group with the Long March 3B carrier rocket at the Xichang Satellite Launch Center.
The 56th Beidou navigation satellite will operate in geostationary orbit (GEO). It is the first and only high-orbit backup satellite launched since my country’s Beidou-3 global network in 2020. Named as a backup satellite, it is actually the main force. The satellite launched this time will play a role when it is listed. It will effectively expand the short message service area, improve the precision single-point positioning capability, and support the stable operation of the system.
Turn back the pointer of time to 2009, when the Beidou-3 project was approved, and my country began to build the Chinese people’s own global satellite navigation system. Different from other satellite navigation systems, my country’s Beidou-3 system adopts a mixed constellation mode, which consists of three different satellites in the middle earth orbit (MEO satellite), inclined geosynchronous orbit satellite (IGSO satellite) and geostationary orbit satellite (GEO satellite). Orbits of satellites.
On November 5, 2017, the first batch of Beidou-3 networking satellites were launched into orbit, and China’s Beidou entered the era of global networking. On June 23, 2020, as the 55th satellite of the Beidou satellite navigation system successfully entered orbit, my country completed the deployment of the Beidou-3 global constellation half a year ahead of schedule. On July 31, 2020, the Beidou-3 global satellite navigation system was officially launched, providing services to the whole world.
The 56th Beidou navigation satellite launched this time, as a geostationary satellite, has inherited the characteristics of the previous geostationary satellites, which are “strong in strength and strong in ability”. Although there are not many geostationary satellites in the Beidou-3 system, they undertake the important task of providing enhanced services for the improvement of the technical indicators of the Beidou navigation system.
Therefore, the 56th Beidou navigation satellite has the distinctive characteristics of the Beidou-3 system, that is, it has the five major capabilities of radio navigation, radio determination, precise point positioning, power enhancement, time synchronization between stations and positioning, and can provide users in my country and surrounding areas. Navigation and Enhanced Services.
At the same time, according to the mission requirements, the research and development team carried out some stand-alone upgrades on this satellite, focusing on improving the hardware capabilities of the satellite, enhancing the navigation signal power and information rate, and further improving the continuity and stability of uplink injection. Users bring faster, more accurate and more stable positioning service experience.
Feng Wenjing, chief designer of the Beidou-3 satellite at the Fifth Academy of Aerospace Science and Technology Group, said that with the launch of this satellite, the precision single-point positioning service of the Beidou-3 system is like expanding from “three lanes” to “four lanes”, and the service capability is also increasing. Then become stronger.
The “special train” carrying the 56th Beidou navigation satellite this time, the Long March 3B launch vehicle, was developed by the China Academy of Launch Vehicle Technology, a subsidiary of Aerospace Science and Technology Group Co., Ltd.
Zhang Tao, the deputy chief designer of the Long March 3A series of launch vehicles, introduced that the development team strictly controlled the quality during the whole process of rocket design, production and testing. , Productization and other aspects have carried out a number of technical status changes to further improve the reliability of the rocket.
The white paper “China’s Beidou in the New Era” released in 2022 pointed out that China’s Beidou in the new era aims to better serve the world and benefit mankind, and will better meet the needs of economic and social development and the people’s better life, and better achieve shared and win-win outcomes.
The inclusion of the Beidou “Nova” this time will also carry out on-orbit test verification, optimize the high-precision system design scheme, and lay a solid foundation for the continued development of Beidou navigation in the new era.
It is reported that my country plans to launch 1 to 3 Beidou network backup satellites this year to further improve the robustness and availability of the constellation. (Reporter Song Chen)
【Editor:】
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