84
SporTrak Color GPS M apping R eceiver
Appendix
Active Leg
The segment of a route currently being traveled.
Altitude
The current elevation above sea level.
BRG
Bearing. The compass direction from your position to a
destination, measured to the nearest degree.
Buoy
A navigation aid (usually found in marine charts) that is
floating in water. The position can vary due to the magni-
tude and direction of the current.
COG
Course Over Ground. The direction the receiver is moving.
COG can be reported in true or magnetic north values.
Coordinates
A unique numeric or alphanumeric description of the
position.
CTS
Course to Steer. The direction you should be traveling in
order to return to the course while proceeding towards the
destination. It is a “compromise” course bearing that
projects from your current position to a point on the
courseline midway between a point perpendicular to your
position and the current leg destination waypoint.
Datum
Refers to the theoretical mathematical model of the earth’s
sea level surface. Map makers may use a different model to
chart their maps, so position coordinates will differ from
one datum to another. The datum for the map you are using
can be found in the legend of the map. If you are unsure of
which datum to use, use WGS84.
Default
The value or setting automatically chosen by the unit unless
otherwise directed. Can be changed in Setup.
DST
Distance. Distance from position to destination.
ETA
Estimated Time of Arrival. The estimated time of day the
leg’s destination waypoint will be reached.
ETE
Estimated Time Enroute. The estimated time remaining to
reach the next waypoint in a route.
HDG
Heading. The direction you are facing, defined as an angle
from North.
Glossary
