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Operator's Manual
PLANE PROJECTION
Glossary
210
The technique of converting the curved surface of the Earth to a
flat surface to represent a map.
Polled Mode
A transponder is in a polled mode during a request-response
session only. Distinguish this from a station, which is polled into
certain slots. This station is first polled and then enters assigned
mode.
POSITION UPDATE
The redefining of position by analysis of satellite orbital data as
referenced to time.
PRN
See PSEUDORANDOM NUMBER
PROCESSOR
The processor circuit card in the console that controls system op-
erations and computes the positioning! navigation solutions.
PROMPT
A message on the display instructing the operator to make a key-
board entry.
PSEUDORANDOM NUMBER
(PRN)
The identification number of a GPS satellite.
PSEUDO-RANGE
Range that includes errors due to clock offset.
PSP
Presentation System Port - A communication port on the AIS
transponder used as an interface to external systems, i.e. the
MX420.
PULSE SPEED SENSOR
Speed log whose speed output signal is defined by a pulse rate
output.
Version 1.5
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