What is the navigation and positioning system independently developed by my country?

The navigation and positioning system independently developed by our country is the "Beidou Satellite Navigation System". Beidou is a satellite navigation system independently constructed and operated by China focusing on the needs of national security and economic and social development. It is an important national space infrastructure that provides all-weather, all-weather, high-precision positioning, navigation and timing services to users around the world. The Beidou system can provide high-precision, highly reliable positioning, navigation, and timing services to all types of users around the world, all day and every day. It also has short message communication capabilities and has initially developed regional navigation, positioning, and timing capabilities.

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The navigation and positioning system independently developed by my country is the "Beidou Satellite Navigation System".

Beidou Navigation Satellite System (English name: BeiDou Navigation Satellite System, referred to as BDS) is a global satellite navigation system independently developed by China. It is also 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 is composed of three parts: the space segment, the ground segment and the user segment. It can provide high-precision, highly reliable positioning, navigation and timing services to all types of users around the world, all day and night. It also has short message communication capabilities, and has initially developed regional navigation, positioning and timing capabilities. The positioning accuracy is decimeter and centimeter levels, the speed measurement accuracy is 0.2 meters/second, and the timing accuracy is 10 nanoseconds.

137 countries around the world have signed cooperation agreements with the Beidou Satellite Navigation System. With the success of global networking, the international application space of the Beidou satellite navigation system will continue to expand in the future.

System Overview

The Beidou Satellite Navigation System (hereinafter referred to as the Beidou System) is an independent construction project of China focusing on the needs of national security and economic and social development. , an independently operating satellite navigation system, is an important national space infrastructure that provides all-weather, all-day, high-precision positioning, navigation and timing services to users around the world.

With the development of Beidou system construction and service capabilities, related products have been widely used in transportation, marine fisheries, hydrological monitoring, weather forecasting, surveying and mapping geographic information, forest fire prevention, communication timing, power dispatching, and disaster relief Disaster reduction, 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.

Industry and regional applications

Since the Beidou system provided services, it has been used in transportation, agriculture, forestry and fishery, hydrological monitoring, meteorological forecasting, and communication systems , power dispatching, disaster relief and mitigation, public security and other fields, it has been widely used, integrated into the country's core infrastructure, and produced significant economic and social benefits.

• ★ In terms of transportation, Beidou system is widely used in key transportation process monitoring, highway infrastructure safety monitoring, high-precision real-time positioning and dispatch monitoring of ports, and other fields. As of December 2018, more than 6 million operating vehicles, 30,000 postal and express delivery vehicles, approximately 80,000 buses in 36 central cities, more than 3,200 inland navigation facilities, and more than 2,900 maritime navigation facilities have applied the Beidou system. , built the world's largest dynamic monitoring system for operating vehicles, effectively improving monitoring management efficiency and road transportation safety levels. According to statistics, the number of major road transport accidents and the number of deaths and missing persons in China dropped by 50% in 2017 compared with 2011.

• ★In terms of agriculture, forestry and fishery, the agricultural machinery operation supervision platform based on Beidou realizes remote management and precise operation of agricultural machinery, serving more than 50,000 agricultural machinery and equipment, increasing precision agriculture output by 5%, and saving agricultural machinery fuel consumption. 10%. Positioning and short message communication functions play a prominent role in applications such as forest fire prevention. It provides fishery management departments with services such as vessel position monitoring, emergency rescue, information release, and fishing vessel entry and exit management. More than 70,000 fishing vessels and law enforcement vessels across the country are equipped with Beidou terminals, and a total of more than 10,000 people have been rescued.

• ★In terms of hydrological monitoring, it has been successfully used in the real-time transmission of hydrological forecasting information in mountainous areas, improving the accuracy of disaster forecasting and providing important support for formulating flood control and drought relief dispatch plans.

• ★In terms of meteorological forecasting and reporting, a series of meteorological forecasting and reporting Beidou terminal equipment have been developed to form system application solutions and improve the observation accuracy, automation level and emergency observation of domestic high-altitude meteorological sounding systems. ability.

• ★In terms of communication systems, we have made breakthroughs in key technologies such as optical fiber teleportation, developed an integrated satellite timing system, and carried out Beidou two-way timing applications.

• ★In terms of power dispatching, the development of power time synchronization applications based on Beidou has created conditions for high-precision time applications in power accident analysis, power early warning systems, protection systems, etc.

• ★In terms of disaster relief and reduction, based on the navigation, positioning, and short message communication functions of the Beidou system, it provides services such as real-time disaster relief command and dispatch, emergency communications, and rapid reporting and sharing of disaster information, showing that This significantly improves the rapid response and decision-making capabilities of disaster emergency rescue.

• ★ In terms of public safety, more than 400,000 police terminals across the country are connected to the police location service platform. The Beidou system plays an important role in the security of major events such as the Asia-Pacific Economic Cooperation meeting and the G20 summit.

Public Application

Beidou system has broad prospects for the development of public services. Navigation services based on Beidou have been adopted by e-commerce, mobile intelligent terminal manufacturing, location-based services and other manufacturers, and have widely entered China's mass consumption, sharing economy and people's livelihood fields, profoundly changing people's production and lifestyle.

On May 10, 2019, the "5G Beidou High-Precision Positioning Open Laboratory" jointly established by China Unicom and BGI Beidou will bring together operators, chip module vendors, equipment vendors, vertical industry application vendors, Research institutions and universities have joined forces to build a cooperative ecosystem based on 5G and Beidou, and jointly promote the application of 5G Beidou's high-precision positioning in vertical industries.

• ★In the field of e-commerce, logistics trucks and delivery personnel of many domestic e-commerce companies use Beidou vehicle-mounted terminals and bracelets to achieve real-time dispatch of vehicle, people, and cargo information.

• ★In the field of smart phone applications, mainstream chip manufacturers at home and abroad have launched integrated communication chips that are compatible with Beidou. In the first three quarters of 2018, about 470 smartphone models sold in the Chinese market had positioning functions, of which 298 models supported Beidou positioning. The Beidou positioning support rate reached more than 63%.

• ★In the field of smart wearables, a variety of smart wearable devices such as watches and bracelets that support the Beidou system, as well as care products for special groups such as student cards and elderly cards, continue to emerge and are widely used.

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