How it works:

* Satellites: A network of 31 operational satellites orbit Earth at high altitudes. These satellites continuously transmit radio signals containing precise time and location data.

* Receivers: GPS receivers (in smartphones, cars, or other devices) pick up these signals from multiple satellites.

* Triangulation: By measuring the time it takes for the signals to reach the receiver from different satellites, the receiver can calculate its distance from each satellite. This information is then used to pinpoint the receiver's exact location (latitude, longitude, and altitude) through a process called triangulation.

Key Features:

* Global coverage: GPS provides location information anywhere on Earth.

* Accuracy: Modern GPS receivers can achieve accuracy down to a few meters.

* Real-time: Location information is updated continuously.

* Versatile: Used in a wide range of applications, including navigation, mapping, surveying, and tracking.

Other Satellite Tracking Systems:

While GPS is the most widely known system, there are others:

* GLONASS (Russia): A similar system developed by Russia.

* Galileo (Europe): A European satellite navigation system.

* BeiDou (China): A Chinese global navigation satellite system.

These systems can be used independently or together to enhance accuracy and reliability.