|| Starpath online classroom || Celestial Navigation Glossary || Glossary Index || Home ||

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z 
range and bearing fix

As it sounds, this is a position fix established using at least one range (measured distance to an object) and one bearing (such as a compass bearing.)

The most common type would be a radar measurement using variable range marker (VRM) and electronic bearing line (EBL) set onto one prominent radar target. To plot this fix in an ECS, put a mark on the target, put a ring on the mark equal to the measured range, and then draw a bearing line emanating from the target in the reciprocal direction to its measured bearing. Where the ring and line intersect is your and bearing fix.

Other options are to obtain distance off an object by vertical sextant angle and then take a compass bearing or note a natural range to provide the bearing.


[close window]