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VMG
Velocity Made Good is the effective velocity
towards a target, after the effects of
crosswinds (especially relevant to aircraft),
currents (watercraft) and terrain (walkers/
cyclists who have planned on walking at a
certain speed) have taken effect. It is the
forward component of velocity.
WAAS
Wide Area Augmentation System. This is a
GPS augmentation system in the U.S. which
enhances the accuracy of GPS.
Warning Radius
Distance at which the unit will sound beeps
indicating the vicinity of a POI, GoTo point
or a route.
Waypoint
A location on a route typically associated
with a distinctive feature (eg. a fork in the
path) or a planned event (eg. a rest point). A
series of waypoints are used to help dene a
route.
15.00 Glossary
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