Completion is imminent! Beidou global networking core constellation deployment completed
CCTV NewsAt 15:22 this afternoon, our country successfully launched the 52nd and 53rd Beidou navigation satellites with the Long March 3B rocket at the Xichang Satellite Launch Center, which is also the last two satellites of the Beidou system deployed in the medium circular orbit.
Satellites in mid-circle orbit can travel the world, so they are the key to the global network of Beidou satellite navigation system. Whether it is GPS or other existing global satellite navigation systems, a large number of satellites need to be deployed in this orbit. After the launch, all 24 satellites planned by Beidou satellite navigation system in this orbit have been in place, and the deployment of the core constellation of the global system has been officially completed.
Beidou has actually quietly entered your life
Video: Why do you say "China’s Beidou, the world’s Beidou"?
Perhaps many people will ask, Beidou has launched so many satellites, when will we be able to use them? Or how can we use them?
There is already "Big Dipper" above your head.
In fact, Beidou has already quietly entered our lives. Now when you turn on your mobile phone or navigator to use navigation services, you are not just receiving GPS satellite signals, but the fusion signal of Beidou, GPS, Glonass and other satellite positioning systems. They can complement each other. For example, in the case of high-rise buildings in the city, the GPS signal in some directions will be blocked, so you can directly receive the signal of Beidou to locate.
What is the use of Beidou’s unique communication capabilities?
Unlike other systems, we can not only know where we are through Beidou, but also tell others where we are through Beidou. This is the unique communication capability that distinguishes Beidou from any other system.
Many people may think that we can communicate so conveniently now, so why use Beidou?
Because at sea, in many deep mountains and forests without ground communication facilities, communication can only be done by satellite signals. Therefore, whether it is sea rescue or meeting for "jungle exploration", Beidou is an excellent choice. Not only is it global coverage, but it is also very cheap.
Of course, this function requires the use of a specific "Beidou" mobile phone!
Official certification! World-class navigation and positioning service capabilities
Video: Understand the working principle of Beidou navigation with high school knowledge
Wang Ping, chief designer of the Beidou-3 satellite, introduced to reporters.At present, the basic system of our Beidou-3 has been evaluated all over the world. The evaluation results show that Beidou’s signal quality, signal ranging accuracy, navigation, positioning and timing accuracy are on par with the US GPS.The completion of all the medium-circle orbit network satellites will enable our Beidou satellite navigation system to achieve world-class service capabilities.
China speed! Beidou breaks the world record for global networking
Since November 2017, our country has organized 18 Beidou launch missions in 25 months and launched a total of 30 Beidou satellites, breaking the world record for the networking speed of global satellite navigation systems at an average rate of 1.2 satellites per month.
Among them, we have to mention the "Beidou special train" – the Changsanjia series of carrier rockets that transported Beidou 38 times.
Since the launch of the first Beidou-2 navigation test satellite in 2007, in the past 12 years, the Changsanjia series of rockets have sent 53 Beidou navigation satellites into the predetermined orbit with 38 successful and perfect performances. If the Beidou navigation test satellites launched earlier are included, the Changsanjia series of rockets have escorted 57 Beidou satellites into orbit with a 100% success rate of 42 launches.
From Beidou-1 to Beidou-3, from several launches a year to more than a dozen launches a year, the Long March-3A development team has been constantly exploring on the road of innovation. They set a precedent for our country’s "one arrow and two stars" to launch high-orbit satellites, further accelerated the deployment of Beidou satellites, greatly shortened the construction progress of Beidou engineering and greatly reduced the construction cost. (CCTV reporter, Wang Shiyu, partner unit Aerospace Science and Technology Group Fifth Academy)
Long March 3A series rocket launch Beidou satellite full record
Long March 3A series rockets launched in 2019
