At present, China's existing ground monitoring and control stations can not achieve uninterrupted tracking and control of global networking satellites. After Beidou satellite serves the global networking needs, the relevant working principles are as follows:
At the same time, the on-orbit operation status of all satellites in the world can also be transmitted to the ground through one satellite at any time, realizing 24-hour uninterrupted management of all networked satellites.
Faced with such a huge satellite management problem, Xi 'an Satellite TT&C Center equipped a set of special equipment for inter-satellite link operation and management at Weinan TT&C Station in 20 15, and put it into use that year to comprehensively monitor the operation of the inter-satellite link system of Beidou global networking constellation.
Members of the engraving team who participated in the project revealed: "With this equipment, we can not only comprehensively test the entire inter-satellite link network, but also diagnose and repair the inter-satellite link system."
This year marks the end of Beidou's global system construction. At present, the last global networking satellite has arrived in xichang satellite launch center, and the launch plan is to be determined in June, which only needs a suitable opportunity.
At present, there are four major satellite navigation and positioning systems in the world, namely, GPS in the United States, GLONASS in Russia, Beidou in China and Galileo in the European Union.
China Beidou satellite navigation system has launched 58 satellites so far, including 4 Beidou navigation test satellites and 29 Beidou-3 satellites. According to the plan, China's Beidou system will complete the launch of the last networking satellite in the near future, thus fully completing the global system construction and realizing the "global dream" that several generations of Beidou people have been persistently pursuing. So the last Beidou-3 satellite in June is very important.
The function of Beidou satellite navigation system can provide positioning, navigation and time service. These three basic functions are basically realized in other satellite navigation systems. On the simple basic function, Beidou system can also provide short message service with communication function, which is the unique function of Beidou system different from other satellite navigation systems in the world.
Seeing that other countries were restricted by GPS satellite positioning system before, many functions were limited, which brought many threats to the country. This is an important reason for China Beidou satellite. After learning from the experience of various satellite navigation systems, China Beidou has accumulated a lot of resources and strived to be superior to other positioning and navigation systems in many fields.
Many people don't understand the function of satellite navigation system to provide accurate time. In fact, in our production and life, there are many fields and scenes that need high-precision time. For example, financial, electric power, communication, industrial production, Internet of Things, smart home and other fields all need to use the precise time provided by Beidou system.
When there is no satellite to provide accurate time authorization! People usually use atomic clock technology, which can provide high-precision time, but it is expensive, so it is impossible to use atomic clocks in all fields of our society, so it is a common choice to rely on satellite navigation system to provide time service.
Welcome to leave a message in the comment area to cheer for the perfect ending of China Beidou!