Satellite Navigation is a method employing a Global Navigation Satellite System (GNSS) to accurately determine position and time anywhere on the Earth. Satellite Navigation receivers are currently used by both private individuals and businesses for positioning, locating, navigating, surveying, and determining the exact time in an ever-growing list of personal, leisure and commercial applications.
Using a GNSS system the following values can accurately be determined anywhere on the globe
1. Exact position (longitude, latitude and altitude co-ordinates) accurate to within 20 m to approx.1 mm.
2. Exact time (Universal Time Coordinated, UTC) accurate to within 60ns to approx. 5ns.
Speed and direction of travel (course) can be derived from these values, which are obtained from satellites orbiting the Earth.
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