How It Works
The Global Positioning System (GPS system) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit. The GPS technology works in any weather conditions, anywhere in the world, 24 hours a day. GPS satellite circle the Earth twice a day in an orbit and transmit signal information to the Earth. GPS trackers (reviser) takes this GPS information and use trilateration to calculate the vehicle’s exact location. The GPS tracker compares the accurate time a satellite signal was transmitted with the precise time it was received. The time difference tells the GPS tracking device how far away the satellite is. Now, with distance measurements from a few more satellite systems, the GPS trackers can determine the vehicle’s exact gps-location and display it on the GPS mapping and thus you can compute and see it on your PC or smart phone screen.
The GPS tracker must be locked on to the signal of at least 3 satellites in orbit to calculate location of the vehicle – latitude and longitude and vehicle movement. With four or more satellites in view, the GPS vehicle tracking can determine car’s location with three parameters – latitude, longitude and altitude. Once the car’s location has been determined, the GPS fleet tracking system can calculate other information provided by GPS, such as speed, track, fuel level, trip distance, distance to destination, idle time, parking time and more.