delayed launch of the last beidou satellite? ! read the beidou satellite navigation system in one article!-凯发k8娱乐登凯发k8娱乐登录

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delayed launch of the last beidou satellite? ! read the beidou satellite navigation system in one article!
time:  2021-08-18 source: suzhou lanscientific co.,ltd.

the long march-3b carrier rocket, originally scheduled to launch the last beidou-3 (the 55th networking satellite), the global networking satellite on june 16, due to the discovery of product technical problems during the pre-launch test, the launch mission was delayed. the launch time is to be determined.


in the last article, we learned that beidou's "black technology" was used in the peak height measurement! the editor leads everyone to appreciate the demeanor of beidou!


so far, in the global navigation system, apart from china's beidou, only the gps of the united states, the european galileo galileo, and the russian glonass are the gnss mentioned in our previous article.


beidou satellite navigation system (hereinafter referred to as beidou system) is a global satellite navigation system built and operated independently by china focusing on the needs of national security and economic and social development. it provides all-weather, all-weather, high-precision positioning, navigation and timing for global users. important spatio-temporal infrastructure of the country served.


simply put, beidou is china's gps, which is 100% localized. the completion of the beidou network is of great significance to our country! and it is worth mentioning that my country's beidou system is still the most accurate system among the four major navigation systems. its accuracy reaches 10 centimeters, which is much higher than the 30 centimeters of the american gps system.


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the beidou satellite navigation system has many practical values, and china has begun to explore the development path of satellite navigation system. in this regard, a three-step development strategy has been formulated:


the first step is to build the beidou no. 1 system. in 1994, the beidou no. 1 system project was launched; in 2000, two geostationary orbit satellites were launched, the system was completed and put into use, and the active positioning system was adopted to provide chinese users with positioning, timing, wide-area differential and short message communication service; in 2003, the third geostationary satellite was launched to further enhance system performance.


the second step is to build the beidou no. 2 system. in 2004, the beidou-2 system engineering construction was started; at the end of 2012, 14 satellites (5 geostationary orbit satellites, 5 tilted geosynchronous orbit satellites and 4 medium-circle earth orbit satellites) were launched and networked. the beidou no. 2 system is compatible with the beidou no. 1 system technology and adds a passive positioning system to provide users in the asia-pacific region with positioning, speed measurement, timing and short message communication services.


the third step is to build the beidou no. 3 system. in 2009, the construction of beidou-3 system was started; at the end of 2018, 19 satellites were launched and the network was completed to complete the basic system construction to provide services to the world; it is planned to complete the launch and network of 30 satellites by the end of 2020, and the beidou iii will be fully completed. number system. the beidou no. 3 system inherits the two technical systems of beidou active service and passive service. it can provide global users with basic navigation (positioning, speed measurement, timing), global short message communication, and international search and rescue services. users in china and surrounding areas can also enjoy regional short message communication, satellite-based enhancement, precise single-point positioning and other services.


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only one short of the beidou-3 system can be completed. the last satellite to be the finale has a great background. it is the last geostationary orbit satellite in the beidou-3 system. the orbit is about 36,000 kilometers from the ground. the unique design of the navigation system such as lonas. it plays an important role in ensuring the smooth transition of the beidou regional system to the global system and further improving the service performance of the beidou global system in my country and surrounding areas.


i believe that this postponement is definitely just a small episode. after the problem is solved, the launch of the last beidou will definitely arrive as scheduled.


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