acoustic modem


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Words related to acoustic modem

a modem that converts electrical signals to telephone tones and back again

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Communication to the surface is by a link from an underwater acoustic modem mounted on the PLEM and powered by two lithium battery packs wired in parallel.
7% increase in fiscal year 2005 net sales of the Undersea Systems Division compared to fiscal year 2004 net sales was due to a continuation of strong demand for Benthos geophysical hydrophones used in the oil and gas exploration industry, increased demand for Stingray ROV systems, which are often used in port and harbor security operations, and an increase in Benthos acoustic modem sales to both naval and commercial customers.
Phase two of the agreement will result in the implementation of Northstar's Acoustic Modem as the primary communications channel between the C-SCOUT and the surface.
The SMART (Smart Modem and Release Technology) Release(TM) is a unique concept from Benthos that combines the proven technology of an underwater acoustic release with the reliable undersea communications functionality of an acoustic modem.
The Smart Modem and Release Technology (SMART) Release is a unique concept from Benthos that combines the proven technology of an underwater acoustic release with the reliable undersea communications functionality of an acoustic modem.
In an historic breakthrough in underwater communications made possible by the use of a Benthos ATM 885 Telesonar Acoustic Modem, the US Navy has completed its latest series of tests in which the submarine USS Dolphin, while cruising at a depth of 400 feet, was able to successfully send several e-mail messages via the internet to facilities located ashore.
Benthos will be providing its latest generation Telesonar Acoustic Modem, the development of which was supported by earlier SPAWAR funding.
Buoyancy driven underwater gliders are generally limited to fairly low data rate communications systems, including acoustic modems and satellite communications (SATCOM) links.
High-frequency (10 kHz) acoustic modems can provide sufficient bandwidth for underwater transfer of data and commands at modest ranges of several kilometres, but subsurface telemetry at longer ranges at high frequencies remains problematic, irrespective of ice cover.
The underwater sensing networks are defined as the system comprised of sensors and acoustic modems with the vehicles to perform the monitoring tasks over the prescribed area.
This pattern pervades the web and even predates it, dating from the days when we dialed up bulletin boards with acoustic modems.
The keys to the system are satellite transmitters and acoustic modems.
There are two types of modems that are usually used with a microcomputer system: direct-connect and acoustic modems.
SA Photonics' Neptune[TM] also provides a means to communicate in acoustically noisy littoral waters, where traditional acoustic modems have difficulty.
Next-generation, high-speed acoustic modems send signals from the ocean bottom to the buoy and more from the surface back to the bottom instruments.
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