Definition:
Back to GPS Glossary
Coordinates: A set of numbers that describe your exact location on the earth's surface. Latitude/longitude (lat/long) coordinates are the most typical lines of reference and are an important part of the USGS topographical mapping system.
Course: The direction from the beginning landmark of a course to its destination (measured in degrees, radians, or mils), or the direction from a route waypoint to the next waypoint in the route segment.
Datum: A math model which depicts a part of the surface of the earth. Latitude and longitude lines on a paper map are referenced to a specific map datum. The map datum selected on a GPS receiver needs to match the datum listed on the corresponding paper map in order for position readings to match.
Back to GPS Glossary
Coordinates: A set of numbers that describe your exact location on the earth's surface. Latitude/longitude (lat/long) coordinates are the most typical lines of reference and are an important part of the USGS topographical mapping system.
Course: The direction from the beginning landmark of a course to its destination (measured in degrees, radians, or mils), or the direction from a route waypoint to the next waypoint in the route segment.
Datum: A math model which depicts a part of the surface of the earth. Latitude and longitude lines on a paper map are referenced to a specific map datum. The map datum selected on a GPS receiver needs to match the datum listed on the corresponding paper map in order for position readings to match.
