NorthStar MX500 Operator's & Installation Manual page 272

Operator's Manual
SET AND DRIFT
SIGNAL-TO-NOISE RATIO (S/N)
S/N
SOFTWARE
SOG
SOTDMA
SPACE SEGMENT
SPEED OVER GROUND
SPHEROID
STEERING COMPASS
TDMA
258
The direction and the speed of the water over ground (current).
Quantitative relationship between the useful and non-useful part
of the received satellite signal. A high S/N indicates a good receiv-
ing condition.
See SIGNAL-TO-NOISE RATIO
Values programmed and preloaded into memory. The values repre-
sent a permanent set of instructions for running the automatic func-
tions (computations) of the navigator.
See SPEED OVER GROUND
Self Organized Time Division Multiple Access – An access
protocol, which allows autonomous operation on a data link
while automatically resolving transmission conflicts.
The orbiting satellite part of the Global Positioning System.
Speed in relation to the sea bed.
See ELLIPSOID.
The compass used for navigation. It may be a direct-reading com-
pass from which the heading may be entered into the navigator via
the keyboard; or, it may be an electronic heading sensor that enters
heading data to the navigator via an optional interface.
Time Division Multiple Access – An access scheme for multiple
access to the same data link.
Glossary
Version 3.0