Car-borne gps positioning systemRationale1. Satellite signal reception: the vehicle-borne gps positioning system receives signals from gps satellites in earth orbit via antennas. These satellites send their location, time and navigation information at intervals. Signal processing: once a satellite signal is received, it is processed by the gps positioning system on board the vehicle to extract useful information. This usually involves technologies such as digital signal processing and data analysis. Time acquisition: gps will send an accurate time information and the vehicle-borne gps positioning system will record the time and synchronize it with its own internal clock. Distance calculation: by measuring the time of transmission between the receiving satellite signal and the receiver, the vehicle-borne gps positioning system can calculate the distance from each satellite. Since the position of the satellite is known, we can calculate the longitude coordinates of the receiver through triangulation. 5. Navigational data calculation: a vehicle-borne gps positioning system will perform navigational functions by calculating the speed, direction, etc. Of the vehicle based on incoming satellite data and information on its location. Map matching: the vehicle-borne gps positioning system will match the calculated longitude coordinates with map data to determine the specific location of the vehicle on the road. 7. Information presentation: finally, a vehicle-borne gps positioning system displays navigational information, vehicle location information, etc., to drivers to facilitate driving。
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Label: what's the idea of a car-mounted gps positioning system
