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| WAAS |
Wide Area Augmentation System |
| Waypoint |
Location, spot or destination (latitude/longitude) that can
be stored in memory to be recalled and used at a later time
for navigation purposes. Simply think of it as an "electronic
address". |
| WDGPS |
Wide area Differential GPS |
| WGS-72 |
World Geodetic System (1972); the mathematical reference
ellipsoid previously used by GPS, having a semi-major axis of
6378.135 km and a flattening of 1/298.26. |
| WGS-84 |
World Geodetic System (1984); the mathematical ellipsoid
used by GPS since January 1987. |
| World geodetic system |
A consistent set of parameters describing the size and shape
of the Earth, the positions of a network of points with respect
to the center of mass of the Earth, transformations from major
geodetic datums, and the potential of the Earth (usually in
terms of harmonic coefficients). |
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