sonar

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Related to Sonars: Sound navigation and ranging

so·nar

(sō′när′)

1. A system using transmitted and reflected underwater sound waves to detect and locate submerged objects or measure the distance to the floor of a body of water.

2. An apparatus, as one in a submarine, using sonar.

3. Echolocation.

[so(und) na(vigation and) r(anging).]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

sonar

(ˈsəʊnɑː)

(Electronics) a communication and position-finding device used in underwater navigation and target detection using echolocation

[C20: from so(und) na(vigation and) r(anging)]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

so•nar

(ˈsoʊ nɑr)

n.

1. a method for detecting and locating objects submerged in water by echolocation.

2. the apparatus used in sonar.

[1940–45; so(und)na(vigation)r(anging)]

sonar

An electrical impulse is converted into sound waves that are transmitted underwater. The sound waves are reflected off objects in their paths, creating echoes that return to the vessel and are picked up by the sonar equipment.

so·nar

(sō′när′)

1. A method of detecting and locating underwater objects, such as submarines or schools of fish, through the use of reflected sound waves. Because the speed of sound in water is constant (about 4,800 feet, or 1,463 meters, per second), the time it takes for a transmitted signal to reach an object and return can be used to calculate the object's distance.

2. The equipment used in doing this.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

sonar

A sonic device used primarily for the detection and location of underwater objects. (This term is derived from the words "sound navigation and ranging.")

Dictionary of Military and Associated Terms. US Department of Defense 2005.

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Noun

sonar - a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; "sonar is an acronym for sound navigation ranging"; "asdic is an acronym for antisubmarine detection investigation committee"

asdic, echo sounder

measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something

navigational instrument - an instrument used for navigating

pinger - a pulse generator used for echo sounding in sonar

pulse generator - a generator of single or multiple voltage pulses; usually adjustable for pulse rate

pigboat, submarine, U-boat, sub - a submersible warship usually armed with torpedoes

Translations

Sonar

kaikuluotain

sonar

ecoscandaglio sonar

sonar

[ˈsəʊnɑːʳ] N → sonar m

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

sonar

[ˈsəʊnɑː^r] n → sonar m

Collins English/French Electronic Resource. © HarperCollins Publishers 2005

sonar

n → Sonar(gerät) nt, → Echolot nt

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

sonar

[ˈsəʊnɑːʳ] n → sonar m inv

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References in periodicals archive ?

Coda Octopus Group announced the full launch of its fourth-generation range of sonars, the Echoscope4G series.

Coda Octopus Group launches new Echoscope 4G series

Side-scan sonars emit pulses down towards the seafloor across a wide-angle while being towed from a boat.

WORKSHOP TEACHES SQU FACULTY SEAFLOOR MAPPING TECHNIQUE

The biggest change that UWSU will deliver will be the addition of more "active" sonars, which will replace the previous dependency on "passive" sonars.

Team Triton makes its bid for UWSU: outfitting the RCN for the underwater battlefields of tomorrow

Phoenix's side scan sonar, which can create an image of large areas of the sea floor, will be towed from behind a Chinese Rescue Ship. Known as the Phoenix Synthetic Aperture Sonar, the piece of equipment that will be used is more accurate than the traditional 75 kHz side sonars that were used over the past two years, noted Phoenix officials, who also said their gear offers a "higher degree of resolution," especially at the outer ranges of sonar.

New Team Joins MH370 Search

Office of Naval Research (ONR) has developed advanced synthetic aperture sonars for detection, localization, and classification (DLC) of mines, for protection of sea lines of communication and naval operating areas, and for support of amphibious operations.

Advances in synthetic aperture sonar transform mine countermeasures and undersea warfare

Speaking at the launch, Rob Balloch, Strategic Development and Marketing Director at Sonardyne said, “Conventional obstacle avoidance sonars have an operating range of just a few hundred metres so their use is often limited to navigating an SDV or submersible during its final approach to the target.

Steer a Safe Course with Sonardyne's New Obstacle Avoidance Sonar

In the mid-1990s high frequency multi-beam sonars were identified as the most promising assets to develop swimmer detection systems.

Harbours keeping harm at bay

Two Model 1512 Pipe Profiling Sonars have been bought from Marine Electronics Ltd, UK, by the National Water Main Cleaning Co.

Pipe Profiling Sonar chosen for New York contract

IMMP and other groups have been pressing for years to curtail the use of intense military sonars, which blast some of the loudest underwater sounds ever produced by humans.

California cracks down on the Navy's sonars

The investigation team concluded, "Tactical mid-range frequency sonars aboard US Navy ships ...

US Navy sonars killed whales. (Marine Campaign)

At their source, ATOC'S sonars, in action since December 1995, produce a deafening 195 dB.

The unquiet oceans: undersea noise experiments threaten the sensitive hearing - and communications - of marine mammals

The Navy, however, is complaining to Congress, trying to push legislative exemptions that would prevent any restrictions from being imposed on the use of LFA Sonar and similar intense sonars.