Three-dimensional navigation is the primary function of GPS. Aircraft, ships, ground vehicles and pedestrians can all use GPS navigators to navigate. The car navigation system is a new technology developed on the basis of the global positioning system GPS. The car navigation system consists of GPS navigation, autonomous navigation, microprocessor, vehicle speed sensor, gyro sensor, CD-ROM drive, and LCD display. The combination of GPS navigation system and electronic map, radio communication network and computer vehicle management information system can realize many functions such as vehicle tracking and traffic management.

　　The development of GPS in the new century:

　　Entering the 21st century, the application of global positioning system (GPS) will be strengthened and developed in all aspects. This article focuses on the latest development of GPS moving towards the 21st century, especially the product content, application and service of the current International GPS Service (1GS). The IGS (International GPS Service) formed on the basis of the global ground-based GPS continuous operation stations (about 200) is an example of the GPS continuous operation station network and integrated service system. It provides various GPS information to global users free of charge, such as GPS precise ephemeris, fast ephemeris, forecast ephemeris, IGS station coordinates and their movement rates, the phase and pseudorange data of GPS signals received by IGS stations, and the earth's rotation rate. Wait. This information supports countless scientific projects in geodesy and geodynamics, including the ionosphere, meteorology, reference frames, precise time transfer, high-resolution estimates of the Earth's rotation rate and its changes, crustal motion, and more.

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In addition to seeing if the GPS is accurate, please also pay attention to the GPS radiation