source:truck tracking webfleet solutions release time:2023-04-21 Hits: Popular:realtime gps tracker online
The global positioning system consists of the following three parts: space part (GPS satellite), ground monitoring part and user part. The GPS satellite can continuously broadcast the ranging signal and navigation electrical text for users for navigation positioning, and receive various information and commands from the ground monitoring system to maintain the normal operation of the system. The main function of the ground monitoring system is to track the GPS satellite, carry out a distance measurement to determine the number of satellites and the satellite clock correction number. After the forecast is performed, the navigation electrical text is prepared in the prescribed format, and the satellite is sent to the satellite through the injection station. The ground monitoring system can also issue various instructions to the satellite through injection stations, adjust the number of clock readings of satellites, repair faults or enable spare parts. The user uses the GPS receiver to determine the distance from the receiver to the GPS satellite, and finds its own three -dimensional position, three -dimensional motion speed and clock difference and other parameters according to the location of the observation given by the satellite star in space. Essence The United States is committed to further improving the functions of the entire system, such as determining satellite tracks through mutual tracking between satellites to reduce the degree of dependence on ground monitoring systems and enhance the autonomy of the system.
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