What are the functions and uses of Beidou navigation system?

Functions of Beidou navigation system:

One, four functions:

1. Short message communication: Beidou system user terminal has two-way message communication function, and users can send 40-60 Chinese short message messages at a time.

2. Accurate time service: Beidou system has accurate time service function, which can provide users with time synchronization accuracy of 20ns- 100ns.

3. Positioning accuracy: the horizontal accuracy is 100m (1σ), and 20m after setting the calibration station (similar to differential state).

4. Maximum number of users the system can accommodate: 540,000 users/hour.

Second, military functions.

The military functions of Beidou satellite navigation and positioning system are similar to GPS, such as: positioning and navigation of moving targets; The launching position of weapon carrier can be quickly located, which shortens the reaction time; Personnel search and rescue, positioning requirements for water demining, etc.

The purpose of Beidou navigation system:

1, personal location service

When you enter an unfamiliar place, you can use a mobile phone with Beidou satellite navigation receiving chip or vehicle-mounted satellite navigation equipment to find your route.

2. Meteorological application

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

3. 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.

4. Intelligent railway transportation

Satellite navigation will promote the upgrading and transformation of traditional modes of transportation.

5. Shipping and water transportation

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.

6. Air transportation

By effectively combining Beidou satellite navigation system with other systems, it will provide more security for air transportation.

7. Emergency rescue

In addition to navigation and positioning, Beidou satellite navigation system also has the function of short message communication. Through the satellite navigation terminal equipment, the location and disaster situation can be reported in time, which can effectively shorten the rescue search time, improve the timeliness of emergency rescue and disaster relief, and greatly reduce the loss of people's lives and property.

8. Guide grazing

From 20 14 to 10, Beidou system began to pilot the construction of Beidou satellite grazing information guidance system in pastoral areas of Qinghai Province. It mainly relies on the management platform of grazing intelligent guidance system in pastoral areas, the Beidou intelligent terminal dedicated for herders and the automatic data acquisition station of pasture, and realizes the dynamic monitoring of pasture grass, cattle and sheep through the relay processing of Beidou ground station and the Big Dipper group.

Extended Information China Beidou Satellite has been officially recognized by the United Nations.

At the meetings of 20 14, 1 10, 17 to 2 1, the Maritime Safety Committee of IMO, which is responsible for formulating international maritime standards, formally incorporated China's Beidou system into the global radio navigation system.

This means that China's navigation system has become the third maritime satellite navigation system recognized by the United Nations, following the US GPS and Russian GLONASS.

Baidu Encyclopedia-Beidou Navigation System