User Manual: Generic Section
Section: Introduction 0-4
Revision: 00
Page
8 of 21
User Operator Terms
Term
Definition
Acoustic Transponder (Intelligent
Transponder)
A type of transponder that is managed by a micro-controller.
Examples include the COMPATT (COMPuting And Telemetry
Transponder) and the WMT (Wideband Mini Transponder).
Depending on supported functionality it can:
Decode acoustic telemetered commands from a transceiver
and can send telemetered data to the transceiver. It can
measure the distance between itself and other transponders
and then telemeter the data to a transceiver. It can be capable
of measuring its depth and the temperature of the water.
It can be used to measure a variety of underwater parameters
and telemeter these back to the surface. It can be used, as an
intelligent angle-measuring device, in a Riser Angle Monitoring
System.
It can be fitted with a release mechanism so it can return, on
command, back to the surface e.g. if battery power is low.
Acoustic Signal
Information carried by sound pressure waves through water.
The Sonardyne acoustic signal has a finite length
Common Reply Signal (CRS)
A reply signal common to a complete family of addressed
transponders.
COMPATT
COMPuting And Telemetry Transponder (see Acoustic
Intelligent Transponder).
Data Acquisition Sub-Assembly (DAS)
A micro – controlled data acquisition and logging sub assembly
located within a transponder.
Database
A body of data stored in a computer memory, magnetic disc
media e.g. embedded hard disc or portable floppy disc
Data Fusion Engine (DFE)
Acts as the system controller, generates the display signals for
the monitor, processes the data from the transceiver for the
display to the operator and output to a DP system and talks to
various "attitude" sensors and other navigation systems
Differential Global Positioning System
(DGPS)
A 24 hour, world-wide radio navigation system. GPS receivers
track and decode the data from satellites and calculate the
position and speed of a vehicle.
Summary of Contents for 8142-000-01
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