Operation Manual

145
User Manual
operational capability, the WAAS will then be incrementally improved over the next years to expand the area
of coverage, increase the availability of precision approaches, increase signal redundancy and reduce operational
restrictions.
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 Waypoint
Any point to which one intends to navigate. A sequence of Waypoints makes up a Route plan .
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 WGS-84 = World Geodetic System 1984
Coordinates System or Datum developed by the Defence Mapping Agency (DMA).
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 Zoom-In
Shows more detail in a smaller area.
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 Zoom-Out
Operates similarly to zoom -in, but in the reverse, showing a wider but less detailed view.
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 XTE = Cross Track Error
The distance from the ship's present position to the closest point on a line between the origin and destinations
Waypoints of the navigation leg being travelled.