acoustic transponder

acoustic transponder

[ə′küs·tik tranz′pän·dər]
(navigation)
A device used in underwater navigation which, on being interrogated by coded acoustic signals, emits acoustic reply.
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The system uses the Ultra-Short BaseLine (USBL) method to calculate the position of a subsea target, in this case Thien Nam's ROV, by measuring the range and bearing from a vessel-mounted transceiver to an acoustic transponder mounted on the target.
It uses an acoustic transponder as the link between a subsea location and a vessel-based monitoring station.
In conventional Ultra-Short BaseLine (USBL) operating mode, Ranger 2 calculates the position of a subsea target, such an ROV or towfish, by measuring the range and bearing from a vessel-mounted transceiver to an acoustic transponder fitted to the target.
The system calculates the position of a subsea target by measuring the range and bearing from a vessel-mounted transceiver to an acoustic transponder fitted to the target.
Ranger 2 calculates the position of a subsea target by measuring the range and bearing from a vessel-mounted Ultra-Short BaseLine (USBL) transceiver to an acoustic transponder on the target.
The project will see the installation of a subsea positioning network of more than 100 acoustic transponders allowing positioning of multiple vessels and ROVs, often working simultaneously on tasks including pipeline touch down monitoring, subsea asset positioning, and jumper metrology.
Slight modifications may allow the manufacture of magnetometer, spectrometer, acoustic transponders, microphones, and CO2 sensors.
Navigating by the same acoustic transponders Alvin uses, ABE took about two hours to reach the seafloor.
The project will observe the installation of a subsea positioning network of above 100 acoustic transponders permitting positioning of multiple vessels and ROVs, often working at the same time in the field, covering tasks together with pipeline touch down monitoring, subsea asset positioning and jumper metrology.
The project will observe the installation of a subsea positioning network of above 100 acoustic transponders permitting positioning of multiple vessels and ROV s, often working at the same time in the field, covering tasks including pipeline touch down monitoring, subsea asset positioning and jumper metrology.
The project involves the installation of a subsea positioning network of around 100 acoustic transponders enabling positioning of multiple vessels and ROV s, often working simultaneously in the field, covering tasks to include pipeline touch down monitoring, subsea asset positioning and jumper metrology.

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