Glossary
Radar/Chart Radar User Guide
Glossary-4
65900010
commercial sources are not available. Digitized charts do not
conform to any standards for chart display.
DGPS:
Differential GPS (see also GPS). Position sensor intended for
precise commercial navigation in coastal waters. The DGPS
employs an additional receiver for the reception of correction
signals from a land-based transmitter to be applied to the satellite-
based GPS position information.
Display Unit:
The Display Monitor, Processing Unit and Controls.
DnV:
Det norske Veritas. Independent maritime organization performing
classification, certification, quality-assurance and in-service
inspection of ships and mobile offshore units with the objective of
safeguarding life, property and the environment.
Dongle:
A small hardware device that, when plugged into a computer,
enables a specific program to run on that computer. The program
is disabled, or operates in a degraded mode if the device is not
present.
DR:
Dead Reckoning – A method of estimating the position of a ship
without astronomical observations, as by applying to a previously
determined position the course and distance traveled since.
DTG:
Distance To Go. Distance to next action, such as a turn, while
running a Route Plan.
Dual Radar:
A dual radar system can connect to two scanner units at the
same time, enabling the overlay of radar video from both scanners
to form a composite display. Each radar video source is known as
a `Channel’.
E
EBL:
Electronic Bearing Line. An EBL control is used to show the relative
or true bearing of a target on the display. The EBL is moved with
the cursor, and the bearing is read of the screen in degrees. One
end is always anchored, either at the centre of the screen or at a
operator-defined point on the display.
ECDIS:
Electronic Chart Display and Information System. A standard of the
International Maritime Organization (IMO), governing electronic
navigational systems.
Summary of Contents for VisionMaster FT
Page 1: ...Radar Chart Radar User Guide Northrop Grumman Sperry Marine B V Part Number 65900010 ...
Page 2: ......
Page 4: ...Radar Chart Radar User Guide 65900010 ii Intentionally Blank ...
Page 24: ...Overview Radar Chart Radar User Guide 1 2 65900010 Single System ...
Page 42: ......
Page 114: ......
Page 212: ......
Page 304: ......
Page 370: ......
Page 450: ......
Page 462: ......
Page 502: ......
Page 516: ......
Page 532: ......
Page 533: ......