Global Positioning System
The Global Positioning System (GPS) is a satellite-based navigation system that provides location and time information anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. It consists of a constellation of at least 24 satellites orbiting the Earth, ground control stations, and user receivers. GPS enables precise positioning, navigation, and timing services for a wide range of applications, from mapping and surveying to vehicle tracking and mobile devices.
Developers should learn GPS when building location-aware applications, such as mapping services, ride-sharing apps, fitness trackers, or IoT devices that require geolocation. It's essential for real-time tracking, geofencing, and spatial data analysis in fields like logistics, agriculture, and urban planning. Understanding GPS APIs and integration (e.g., with mobile SDKs) allows for accurate location-based features in software.