Is the GPs used in our mobile phone made in China or used in America?

The GPS used in mobile phones is American.

In 2020, there will be four major satellite navigation systems in the world, besides China's Beidou, there will also be American GPS, Russian GLONASS and European Galileo. The most mature is the American GPS system.

The new generation of GPS-3 satellite being deployed is the most advanced. Its accuracy is nearly 3 times higher than that of existing GPS signals, and its anti-interference ability is 8 times higher. In addition, it can quickly turn off the navigation signal transmission in a specific geographical location as needed. By the end of 20 19, GPS satellite constellation has 30 satellites, providing positioning, navigation and timing services for more than 4 billion civil, commercial and military users.

Extended data

Other satellite navigation systems

1, GLONASS navigation system

The Russian GLONASS navigation system consisting of 24 satellites was completed in199565438+February. So far, the Soviet Union/Russia has developed three generations of navigation satellites: GLONASS, GLONASS-M and K. In satellite communication identification, "GLONASS" uses frequency division multiple access to distinguish satellites, and each satellite uses different frequencies to transmit signals, which has good anti-interference ability, but the cost of user equipment is high;

In the constellation optimization design, "GLONASS" adopts a symmetrical constellation design with three evenly distributed orbital planes, which can save the fuel carried by the satellite. By the end of 20 19, there were 28 GLONASS satellites in orbit, including 26 GLONASS-M satellites and 2 GLONASS-K satellites, of which 22 satellites provided navigation services, and the rest were in the test and backup state.

2. European Galileo navigation system

The European Galileo navigation system is planned to consist of 30 satellites (three of which are backup satellites), which are evenly distributed on three inclined orbital planes with an interval of 120 degrees. The design positioning accuracy of free service is 6 meters, and the positioning accuracy of paid service can be better than 1 meter.

Galileo has a large number of satellites, high orbital position and large coverage area, which can provide services for a wider range of people, with higher accuracy and stronger anti-interference ability. Unlike the dual-use of Russian and American satellite navigation systems, Galileo belongs to pure civilian use.

By the end of 20 19, Galileo had 25 satellites in orbit, of which 22 provided navigation services. However, from July, 2065438 to July, 2009, "Galileo" experienced a system-level failure, and its service was completely interrupted for more than 140 hours, which exposed many problems in Galileo's operation and management.

World Wide Web-What about the global satellite navigation system abroad? Expert: At present, the most mature GPS system is the United States.