The four major functions of the Beidou Satellite Navigation System:

Beidou navigation system

Short message communication: The Beidou system user terminal has bidirectional message communication function, and users can transmit short message information of 40-60 Chinese characters at once.

It can transmit information of up to 120 Chinese characters at once. It has important application value in ocean navigation.

Precision timing: The Beidou system has a precision timing function, which can provide users with a time synchronization accuracy of 20ns-100ns.

Positioning accuracy: The horizontal accuracy is 100 meters (1 σ), and after setting up a calibration station, it is 20 meters (similar to differential state). Operating frequency: 2491.75MHz.

The maximum number of users that the system can accommodate is 540000 households per hour.

Beidou navigation system

The military functions of the Beidou satellite navigation and positioning system are similar to GPS, such as: positioning and navigation of moving targets; Rapid positioning of weapon vehicle launch positions to shorten reaction time; Personnel search and rescue, water * positioning requirements, etc.

This function is used in military affairs, which means that it can actively perform positioning at all levels. That is to say, once the "Beidou" satellite navigation and positioning system is equipped at all levels in mainland China, in addition to providing self positioning and navigation, the high-level command center can also grasp the position of * at any time through the "Beidou" system and transmit relevant commands, which is of great help to the execution of tasks. In other words, the mainland can use the "Beidou" satellite navigation and positioning system to carry out command and control as well as battlefield management.

Civilian functions

Personal location service

When you enter unfamiliar places, you can use a mobile phone or car mounted satellite navigation device equipped with a Beidou satellite navigation receiver chip to find the route you want to take.

Schematic diagram of Beidou satellite navigation system

Meteorological applications

The development of Beidou Navigation Satellite Meteorological Applications can promote China's weather analysis and numerical weather forecasting, climate change monitoring and prediction, as well as improve the level of space weather warning business and enhance China's meteorological disaster prevention and mitigation capabilities.

In addition, the meteorological application of the Beidou Navigation Satellite System also has an important impact on promoting innovative applications and industrial expansion of Beidou Navigation Satellite System.

Road traffic management

Satellite navigation will help alleviate traffic congestion and improve road traffic management. By installing satellite navigation receivers and data transmitters on vehicles, the vehicle's location information can be automatically forwarded to the central station within seconds. These location information can be used for road traffic management.

Railway intelligent transportation

Satellite navigation will promote the upgrading and transformation of traditional transportation methods. For example, in the field of railway transportation, installing satellite navigation terminal equipment can greatly shorten the train travel interval time, reduce transportation costs, and effectively improve transportation efficiency. In the future, the Beidou satellite navigation system will provide

Beidou navigation system

High reliability and precision positioning, speed measurement, and timing services promote the modernization of railway transportation and realize the transformation from traditional dispatching to intelligent transportation management.

Sea and water transportation

Sea and water transportation are one of the most widely used modes of transportation and also one of the earliest applications of satellite navigation. Most of the ships running in the world's oceans and Rivers and Lakes are equipped with satellite navigation terminal equipment, which makes maritime and waterway transportation more and more safe. The Beidou satellite navigation system will provide navigation positioning and safety assurance for waterborne vessels under any weather conditions. At the same time, the short message communication function of the Beidou Satellite Navigation System * will support the development of various new services.

Schematic diagram of Beidou satellite positioning system

air transport

When an airplane lands on an airport runway, the basic requirement is to ensure a safe distance between the airplanes. By utilizing the advantages of satellite navigation positioning and speed measurement, the instantaneous position of aircraft can be determined in real time, effectively reducing the safe distance between aircraft. Even in foggy weather conditions, automatic blind landing can be achieved, greatly improving flight safety and airport operation efficiency. By effectively integrating the Beidou satellite navigation system with other systems, more safety guarantees will be provided for air transportation.

Beidou navigation system

emergency rescue

Satellite navigation has been widely used for search and rescue in smoke prone areas such as deserts, mountainous regions, and oceans. The key to successful rescue in major disasters such as earthquakes and floods is to timely understand the situation and quickly reach the rescue site. In addition to navigation and positioning, the Beidou satellite navigation system also has short message communication function. Through satellite navigation terminal devices, the location and disaster situation can be reported in a timely manner, effectively shortening the rescue and search time, improving the efficiency of emergency rescue and greatly reducing the loss of people's lives and property.

Guide grazing

In October 2014, the Beidou system began piloting the construction of the Beidou satellite grazing information guidance system in pastoral areas of Qinghai Province. It mainly relies on the intelligent guidance system management platform for pastoral grazing, the Beidou intelligent terminal for herdsmen, and the automatic data collection station for pastures to achieve data information transmission. Through the Beidou ground station and Beidou constellation relay processing, dynamic monitoring of pasture grass, cattle and sheep is achieved. In the summer of 2015, herdsmen in pilot pastoral areas were able to use Beidou intelligent terminal devices to guide grazing.

Beijing Sanxin Tongdao Technology Co., Ltd. mainly operates GPS, electronic compass, inertial navigation and other products related to position and direction, and provides technical development services for related products.