ass system and our country's navigation and positioning system

China's Beidou Satellite Navigation System (BDS) is a global satellite navigation system independently developed by China. It is the third mature satellite navigation system after GPS and GLONASS. BeiDou Satellite Navigation System (BDS), American GPS, Russian GLONASS, and EU GALILEO are recognized suppliers by the United Nations Satellite Navigation Committee.

The Beidou satellite navigation system consists of three parts: the space segment, the ground segment and the user segment. It can provide high-precision, all-day, all-day services to all types of users around the world. Highly reliable positioning, navigation, and timing services, with short message communication capabilities, it has initially developed regional navigation, positioning, and timing capabilities. The positioning accuracy is 10 meters, the speed measurement accuracy is 0.2 meters/second, and the timing accuracy is 10 nanoseconds.

Beidou Satellite Navigation System (hereinafter referred to as Beidou System) is a satellite navigation system independently constructed and independently operated by China focusing on national security and economic and social development needs. It provides all-weather, all-day, high-speed Nationally important space infrastructure providing precise positioning, navigation and timing services. (Recommended learning: PHP video tutorial)

With the development of Beidou system construction and service capabilities, related products have been widely used in transportation, marine fisheries, hydrological monitoring, weather forecasting, and surveying and mapping Geographic information, forest fire prevention, communication timing, power dispatching, disaster relief and mitigation, emergency search and rescue and other fields have gradually penetrated into all aspects of human social production and people's lives, injecting new vitality into global economic and social development.

Satellite navigation systems are global public resources, and multi-system compatibility and interoperability have become a development trend. China has always adhered to and implemented the development concept of "China's Beidou, the world's Beidou", served the construction and development of the "Belt and Road" initiative, and actively promoted international cooperation on the Beidou system. Join hands with other satellite navigation systems and work with various countries, regions and international organizations to jointly promote the development of the global satellite navigation industry, so that the Beidou system can better serve the world and benefit mankind.

Development Goals

Build a world-class satellite navigation system to meet the needs of national security and economic and social development, and provide continuous, stable and reliable services to global users; development Beidou industry serves economic and social development and people's livelihood improvement; deepens international cooperation, shares satellite navigation development results, and improves the comprehensive application benefits of global satellite navigation systems.

Construction Principles

Autonomy. Adhere to the independent construction, development and operation of the Beidou system and have the ability to independently provide satellite navigation services to users around the world.

open. Provide free public satellite navigation services and encourage all-round, multi-level and high-level international exchanges and cooperation.

compatible. It advocates compatibility and interoperability with other satellite navigation systems, encourages international exchanges and cooperation, and is committed to providing users with better services.

gradual. Promote the construction of the Beidou system step by step, continue to improve the service performance of the Beidou system, and continue to promote the comprehensive, coordinated and sustainable development of the satellite navigation industry.

Basic composition

The Beidou system consists of three parts: the space segment, the ground segment and the user segment.

The space segment consists of a number of geostationary orbit satellites, inclined geosynchronous orbit satellites and medium earth orbit satellites.

The ground segment includes several ground stations such as the main control station, time synchronization/injection station and monitoring station, as well as inter-satellite link operation and management facilities.

The user segment includes Beidou and basic products such as chips, modules, and antennas compatible with other satellite navigation systems, as well as terminal equipment, application systems, and application services.

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