Satellite navigation systems, including GPS, Galileo, and GLONASS, are crucial technologies providing precise geospatial positioning worldwide. Utilizing...
Satellite navigation, commonly known as Global Navigation Satellite Systems (GNSS), uses signals from orbiting satellites to accurately determine a receiver's position, velocity, and precise time anywhere on Earth.
The primary global systems are the United States' GPS, Russia's GLONASS, Europe's Galileo, and China's BeiDou Navigation Satellite System (BDS).
Receivers on Earth calculate their position by measuring the time it takes for signals from multiple satellites to reach them. By knowing the exact position of the satellites and the signal travel time, the receiver can triangulate its own location.
Applications span personal use (smartphones, car navigation) to professional fields such as aviation, maritime, surveying, agriculture, emergency services, disaster management, and critical infrastructure timing.