How many navigation satellites are there in China's Beidou satellite navigation system?

China Beidou satellite navigation system currently has 4 1 navigation satellites.

China Beidou II has 24 navigation satellites, and China Beidou II has 17 navigation satellites.

The space segment of Beidou satellite navigation system consists of 5 geostationary satellites and 30 non-geostationary satellites. China plans to cover the whole world around 2020.

20 17 1 1.5, China's third generation navigation satellite was successfully launched, which marked the official start of the construction of Beidou global satellite navigation system in China.

Extended data:

Use of Beidou satellite navigation

I. Meteorological applications

The meteorological application of Beidou navigation satellite can promote China's weather analysis, numerical weather forecast, climate change monitoring and prediction, improve the operational level of space weather warning, and enhance China's meteorological disaster prevention and mitigation capabilities.

Second, road traffic management

Satellite navigation will help to slow down traffic jams and improve road traffic management. By installing a satellite navigation receiver and a data transmitter on the vehicle, the position information of the vehicle can be automatically forwarded to the central station within a few seconds. These location information can be used for road traffic management.

Third, the railway intelligent transportation

Satellite navigation will promote the upgrading and transformation of traditional modes of transportation. For example, in the field of railway transportation, by installing satellite navigation terminal equipment, the train interval can be greatly shortened, the transportation cost can be reduced, and the transportation efficiency can be effectively improved. In the future, Beidou satellite navigation system will provide

Iv. shipping and water transport

Maritime and water transportation is one of the most extensive modes of transportation in the world, and it is also one of the earliest application fields of satellite navigation. Most ships sailing in oceans, rivers and lakes all over the world are equipped with satellite navigation terminal equipment, which makes sea and waterway transportation more efficient and safe.

Beidou satellite navigation system will provide navigation, positioning and safety guarantee for ships sailing on water under any weather conditions. At the same time, the unique short message communication function of Beidou satellite navigation system will support the development of various new services.

References:

Baidu Encyclopedia-Beidou Satellite Navigation System