NorthStar 961 Reference Manual page 373

GGlossary
T
his glossary contains general navigational terms as well as
terms found throughout the 961/962 Operations and
Reference Manual.
accuracy
Absolute accuracy—the accuracy of your present position's
displayed lat/lon coordinates, compared with lat/lon
determined from a chart or other reference source.
Repeatable accuracy—the ability to return to the same location
using a receiver's previously obtained coordinates.
acquisition
The procedure—and the time it takes—during which a GPS
receiver tries to track satellites, but before it actually computes
a position fix.
almanac
Data describing the precise orbits of GPS satellites, obtained
automatically from satellite signals, and stored in a GPS
receiver. The first time the receiver is turned on, it requires
about 15 minutes to collect almanac data. Thereafter, it
usually can use the almanac data previously collected.
ARCS
Admiralty Raster Chart Service.
autopilot
An electronic compass-related steering aid that automatically
maintains a steady course.
avoidance point
A specific position that you enter into the database, and define
by its radius and either its lat/lon, or loran TDs, or distance and
bearing; it indicates an area into which you specifically want
to avoid navigating.
baud rate
The speed at which data is output from the 961/962 (also the
speed at which data is output from other instruments
interfaced to the 961/962).
beacon
A radio transmitter operated by the U.S. Coast Guard that
supplies differential corrections to GPS receivers.
bearing
The magnetic course from your present position to a waypoint.
cartography
The science or art of map-making.
chain
A group of loran transmitters comprising a master station and
at least two secondaries.
961/962 Operations and Reference Manual, Rev. A Page G-1