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List of the catalogue of this article:

• 1,The world's major satellite navigation and positioning systems include
• 2, Satellite Navigation Principle
• 3, The global satellite navigation and positioning system has ().
• 4、 How many satellite positioning systems are there in the world now?

The world's major satellite navigation and positioning systems include

The world's major satellite navigation and positioning systems include the GPS system of the United States, the Galileo satellite navigation system, Russia Ross GLONASS System, China BeiDou Satellite Navigation System. GPS is a new generation of space satellite navigation and positioning system jointly developed by the U.S. Army, Sea and Air Force in the 1970s.

There are four major global satellite navigation systems in the world, namely, the Global Positioning System of the United States (GPS), the Glonas Satellite Navigation and Positioning System of Russia (GLONASS), the European Galileo Satellite Navigation and Positioning System (Galileo), and the China Beidou Satellite Navigation System (BDS ).

The world's four major satellite positioning systems are: the Global Positioning System (GPS) of the United States, the Russian "Glonas" system, the "Galileo" system of Europe and the "Beidou" system of China. GPS was developed by the U.S. military in the 1970s and completed in 1994, with 24 working satellites and 4 backup satellites.

The general term of the Global Positioning System is GNSS, and the corresponding GNSS module refers to the positioning and navigation module of the receiver type covering multiple satellite positioning systems of GPS, Beidou, GALILEO and GLONASS.

Satellite Navigation Principle

1. Satellite positioning adopts the principle of triangulation to determine the position by the help of the distance measurement signal emitted by the satellite.Place, that is, the satellite in space as a known point, measures the distance from the satellite to the ground point, and then determines the position of the receiving device on the surface of the earth or in the air through the distance.

2. The principle of satellite navigation is: Doppler speed measurement positioning: the "Meridian" satellite navigation system adopts this method. The user positioning device measures the Doppler frequency shift curve according to the Doppler frequency shift between the signal frequency received from the navigation satellite and the signal frequency sent on the satellite.

3. The principle of satellite navigation is that each navigation satellite constantly transmits its own precise location with time to the ground. After receiving this information, the satellite positioning receivers on airplanes, ships and other vehicles will quickly calculate their own position, so as to achieve the purpose of navigation.

4. GPS navigation systemThe basic principle of integration is to measure the distance between the satellite of the known location and the user's receiver, and then combine the data of multiple satellites to know the specific location of the receiver.

The global satellite navigation and positioning system has ().

1. GPS, China BeiDou Satellite Navigation System, Glonas, Galileo Satellite Navigation System.GPS is the abbreviation of Global Positioning System in English, and it is abbreviated as "ball position system" in English.

2. The GPS system of the United States. GPS is the abbreviation of Global Positioning System in English, and it is abbreviated as "ball position system" in English. GPS is a new generation of space satellite navigation and positioning system jointly developed by the U.S. Army, Navy and Air Forces in the 1970s. Galileo satellite navigation system.

3. BeiDou satellite navigation system is a satellite navigation system independently built and operated by the People's Republic of China. It can provide global users with round-the-clock, all-clock and high-precision positioning, navigation and timing services.The development of the BeiDou system is divided into three generations, and now it has developed into the third generation of BeiDou satellite navigation system to serve the world.

4. The world's major satellite navigation and positioning systems include GPS of the United States, Russia's Glonas Satellite Navigation System (GLONASS), the European Union's Galileo Satellite Navigation System (GALILEO) and China's BeiDou Satellite Navigation System (BDS) .

5. The world's major satellite positioning systems include: Beidou Satellite Navigation System (BDS), Galileo Satellite Navigation System (GALILEO), GLONASS and GPS.

6. The general name of the global positioning system is GNSS, and the corresponding GNSS module refers to the positioning and navigation module of the receiver type covering multiple satellite positioning systems of GPS, Beidou, GALILEO and GLONASS.

How many satellite positioning systems are there in the world now?

1. As of December 17, 2020, the world's four major positioning systems: GPS satellite navigation system, GLONASS navigation system, Beidou navigation system, and Galileo navigation system.

2. There are four major global satellite navigation systems in the world, namely, the American Global Positioning System (GPS), the Russian Glonas Satellite Navigation and Positioning System (GLONASS), the European Galileo Satellite Navigation and Positioning System (Galileo), and the Chinese Beidou Satellite Navigation System (B DS).

3. At present, there are 4 major satellite positioning systems in the world. They are: BeiDou SatelliteNavigation system (BDS), Galileo satellite navigation system (GALILEO), GLONASS and GPS.

4. At present, there are four satellite navigation and positioning systems that have been installed and applied in the world. The second-generation global satellite radio navigation system GPS set up in the United States. The space part includes 24 satellites distributed in 6 orbits, with an altitude of about 20,200km and a running speed of 3,800m/s.

5. The world's four major satellite positioning systems are: the United States Global Positioning System (GPS), Russia's "Glonas" system, Europe's "Galileo" system and China's "Beidou" system. GPS was developed by the U.S. military in the 1970s and completed in 1994, with 24 working satellites and 4 backup satellites.