Garmin GPSMAP 295 - Manual (Page 107)

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Glossary of Navigation Terms
Appendix F
Bearing (BRG): The compass direction from your present position to a destination
waypoint.
Course: The compass course between the ‘From’ and ‘To’ waypoints.
Course to Steer: The recommended direction to steer in order to reduce course
deviation and return to the course line. Provides the most efficient heading to get
back to the desired course and proceed along your route.
Crosstrack Error (XTK): The distance you are off a desired course in either
direction, left or right.
Distance (DIS): The distance to your destination or the next waypoint in a route.
Estimated Time of Arrival (ETA): The estimated time that you will reach your
destination waypoint (or next route waypoint), based on current ground speed and
track.
Estimated Time Enroute (ETE): The estimated time required to reach the
destination waypoint (or next route waypoint), from your present position, based on
current ground speed and track.
Estimated Time to VNAV (ETV): Prior to reaching the initial descent point, ETV
indicates the time it will take to reach the initial descent point. After passing the
initial descent point, ETV indicates the time to reach the target altitude following the
designated vertical navigation parameters.
Glide Ratio (GR): The ratio of horizontal distance traveled to vertical distance
traveled. For example, a 6:1 glide ratio indicates a 1000’ vertical descent for every
6000’ horizontal distance traveled.
Glide Ratio to Target (GRT): The glide ratio required to descend from your
present position and altitude to the target altitude at the location specified on the
vertical navigation submenu.
Grid: A coordinate system that projects the earth on a flat surface with position
measurements based on northing and easting distances from square grid zones.
Ground Speed (or Speed): The velocity you are traveling relative to a ground
position.
Ground Track (TRK): See Track.
Latitude: A north/south measurement of position perpendicular to the Earth’s polar
axis.
Longitude: An east/west measurement of position in relation to the Prime Meridian
(an imaginary reference line originating at the north and south poles and passing
through Greenwich, England).
Position: An exact, unique location based on a geographic coordinate system.
Track (TRK): The direction of movement relative to a ground position.
Turn: The difference between Bearing (BRG) and Track (TRK). ‘L’ indicates that you
should turn to the left, ‘R’ indicates that you should turn right. The degrees indicates
the difference angle and the number of degrees you should turn.
Universal Transverse Mercator/Universal Polar Stereographic (UTM/UPS): A
grid coordinate system that projects global sections onto a flat surface to measure
position in specific zones.
Vertical Speed to Target (VST): The speed at which you are descending to the
target altitude. A VST higher or lower than specified on the vertical navigation
submenu indicates you are descending too fast or too slowly.