Desired Track (DTK):
The desired course of
navigation between a point of origin (FROM) and a
destination (TO) waypoint.
Destination:
The last waypoint in the active route.
Dilution of Precision (DOP)
: A merit value for the
calculated
position
based
on
the
geometrical
configuration of the satellites used; 3 is considered good,
greater than 7 is considered poor. Also called Precision
Dilution of Precision or PDOP.
Direct-To:
The function or procedure that directs you
from your present position to the designated TO
waypoint.
Distance:
A measure of interval in space. Also
referred to as range.
DME:
Distance Measuring Equipment
Drift:
Displacement from the intended course of
travel.
E
Elevation:
The angle of a GPS satellite above the
horizon.
Emergency Search:
The function that allows you to
immediately navigate to the nearest airport in the case
of an emergency.
Ephemeris:
A list of accurate positions or locations of
a celestial object as function of time.
Estimated Time of Arrival (ETA)
- The estimated
time of arrival at the TO waypoint in UTC time using
a 24 hour clock.
Estimated Time En route (ETE)
- The estimated
time from your present position to the TO waypoint.
F
FAF:
Final Approach Fix.
15-4
Glossary
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