What do global positioning system send to give users their precise locations?

Answer 1

A GPS device relies on a space based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. It was developed in 1973 to overcome the limitations of previous navigation systems.

Answer 2

GPS tracking devices work through satalitte. The device is programmed to 3 or more sataliites that recieve a signal from the device's position on Earth and triangulate that signal to give a poition of exact longitude and latitude.

Answer 3

They don't send anything. GPS systems are passive (receivers) only. They receive signals and precise timing clock data from a series of satellites. Since the satellites know their own positions, the receiver can use the satellite data to calculate its own location.

Answer 4

Real time GPS vehicle tracking works by using 3 satellites located around orbit that than triangulate your position based on the response time to them. There exist around 24 satellites above Earth to allow for constant coverage.