Global Navigation Satellite System (GNSS)

GNSS stands for Global Navigation Satellite System, which is a network of satellites used for providing geolocation and time information to GPS receivers. There are several GNSS constellations, with the most commonly known being:

GPS (Global Positioning System): Developed and operated by the United States government, GPS is the most widely used GNSS constellation.

GLONASS (Global Navigation Satellite System): Developed by Russia, GLONASS is another global navigation satellite system.

Galileo: This is the European Union's global navigation satellite system. Galileo aims to provide an independent high-precision positioning system. It's designed to be interoperable with both GPS and GLONASS

BeiDou Navigation Satellite System (BDS): Developed by China, BeiDou is another global navigation satellite system. It initially started as a regional system but expanded into a global system.

These constellations work by transmitting signals to receivers on Earth. By receiving signals from multiple satellites and triangulating their positions, GNSS receivers can determine their precise location, speed, and time. The collaboration and compatibility of these constellations often enhance the accuracy, reliability, and availability of positioning information worldwide.