Waypoints

A waypoint is a reference point in physical space used for purposes of navigation.
Waypoints are sets of coordinates that identify a point in physical space. Coordinates used can vary depending on the application. For terrestrial navigation these coordinates can include longitude and latitude. Air navigation also includes altitude. Waypoints have only become widespread for navigational use by the layman since the development of advanced navigational systems.

 

In aviation, area navigation (RNAV)—a method of navigation that permits aircraft operation on any desired flight path within the coverage of station-referenced navigation aids or within the limits of the capability of self contained aids, or a combination of these—relies heavily upon waypoints. RNAV is increasingly used as the primary method of navigation for aircraft.
In the RNAV context, a waypoint is a predetermined geographical position that is defined in terms of latitude/longitude coordinates (altitude is ignored). Waypoints may be a simple named point in space or may be associated with existing navigational aids, intersections, or fixes. A waypoint is most often used to indicate a change in direction, speed, or altitude along the desired path.

About Image : You can see some Waypoints in Image that are marked as blue Triangle with co-ordinates.


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