The last networking satellite of Beidou-3 is scheduled to be launched in May. What's the point?

With the progress of scientific research strength in China, the space industry is also developing rapidly. Beidou satellite navigation system is a great achievement of China. Now, this great three-step project, which started at 1994, finally ushered in the final battle, which means that after the three major satellite navigation in the world, China's Beidou navigation system will also be able to serve the world, and more importantly, military strikes will not be affected by foreign GPS.

satellite navigation system

The system is an autonomous geo-spatial positioning satellite system covering the whole world, which can determine the position (longitude, latitude and height) of small electronic equipment and accurately locate it within the range of 10 meter.

Four global positioning systems

At present, the most advanced global positioning system in the world is the United States, which is a medium-range circular orbit satellite navigation system developed and maintained by the US Department of Defense. It can provide accurate positioning, speed measurement and high-precision standard time for most areas (98%) of the earth's surface. The system was developed by American government in 1960s+0970s, and was fully built in 1960s +0994.

Secondly, Russia's global navigation satellite system was developed by the Soviet Union in 1982. After the disintegration of the Soviet Union, it once lost most of its satellites and functions, and it is maintained and operated by Russia today.

The EU Galileo positioning system was built by the EU through the European Space Agency and the European Navigation Satellite System Authority. By 2020, the system will launch 30 satellites. One of the purposes of Galileo system is to provide EU countries with autonomous high-precision positioning systems, which are independent of GLONASS system in Russia and Global Positioning System (GPS) in the United States. When these systems are closed, the EU can use Galileo.

Beidou satellite navigation system is a self-built satellite navigation system in China. Beidou satellite navigation system is composed of two independent parts, one is a regional experimental system that began to operate in 2000, and the other is a global navigation system that has begun to serve the whole world.

History of Beidou Satellite Navigation System

The first generation Beidou system was officially named Beidou satellite navigation test system, also known as Beidou-1, and three satellites provided regional positioning services. Since 2000, the system has mainly provided navigation services in China.

The second generation Beidou system, officially named Beidou satellite navigation system, is also called Beidou II. When Beidou-2 is completed, it will be a global satellite navigation system with 16 satellites, including 6 geostationary orbit satellites, 6 tilted geosynchronous orbit satellites and 4 medium earth orbit satellites. By the end of 20 1 1, 1 1, Beidou II will contain 10 satellites and begin to be put into use in China. 20 12 1 1, the second generation Beidou system began to provide users with regional positioning services in the Asia-Pacific region.

From 2065438 to mid-2005, China began to build the third generation Beidou system (Beidou-3) and establish a global satellite network. The third generation consists of 30 satellites, including 3 geostationary orbit satellites, 24 medium earth orbit satellites and 3 tilted synchronous orbit satellites. This time, the last networking satellite of Beidou-3 is scheduled to be launched in May.

The significance of launching the last networking satellite of Beidou-3

The successful launch of the satellite means that the Beidou global system construction has been fully completed. By then, we will not be influenced by foreign countries in many aspects, especially in military affairs. In addition, Beidou satellite navigation system can also provide support for many countries in the world, because its construction principles are autonomy, openness, compatibility and gradual progress.