Satellite & Space Missions

Satellite Navigational Systems

Satellite Navigation is a system of satellites that provide autonomous geo-spatial positioning with global coverage. It allows small electronic receivers to determine their location (longitude, latitude, and altitude) to high precision (within a few meters) using time signals transmitted along a line of sight by radio from satellites. The signals also allow the electronic receivers to calculate the current local time to high precision, which allows time synchronization. A Satellite Navigation system with global coverage may be termed a global navigation satellite system (GNSS). Satellite navigation systems that provide enhanced accuracy and integrity monitoring usable for civil navigation as well as Core Satellite navigation systems are currently GPS (United States), GLONASS (Russian Federation), Galileo (European Union) and Compass (China).