Find your way with global positioning
The GPS tracking system uses 24 solar powered satellites (with six spares,) that continuously orbit earth along six different paths, traveling at an altitude of 20,000 km. Their routes are mapped so that anywhere on Earth, at any time there are at least four satellites "visible" in the sky. The satellites have atomic clocks on board and the GPS system must make allowances for Special Relativity to ensure accurate time.
Satellite signals travel at the speed of light. Using the mathematical principle called trilateration, GPS offers the ability to locate and track a subject, pinpointing longitude, latitude, ground speed and course of direction. The system operates independently from telephone or internet reception and requires only a GPS receiver. The latest stage of accuracy enhancement uses the L5 band and has an ability to pinpoint to within 30 centimeters. To save energy, real-time GPS trackers do not send a stream of data but report positions at pre-determined intervals. Typically, the fastest reporting interval is ten seconds.
GPS systems are used for navigation on sea, land and air. It also supports safety for people and possessions, route optimization and reducing vehicle fuel costs. GPS is also now used in wildlife tracking and protection, providing automated collection of thousands of point locations to more precisely define home ranges and migration routes.
GPS integrates with programs such as Motion Detection, Perimeter & Intrusion and Gun Shot Detection programs. Gun Shot Detection monitors events in real-time using both the gun shot GPS coordinates and XProtect camera coordinates.