Acoustic radar

so·nar (s

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).]

sonar [ˈsəʊnɑː]

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

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

sonar (s

när

)

1. Short for sound navigation and ranging. A method of detecting, locating, and determining the speed of objects through the use of reflected sound waves. A sound signal is produced, and the time it takes for the signal to reach an object and for its echo to return is used to calculate the object's distance. The Doppler effect can also be used to determine the object's relative velocity. Electronic sonar systems are used for submarine navigation and for detecting schools of fish. Some mammals, especially bats, use biological sonar to navigate and detect prey in dark conditions, commonly called echolocation.

2. The equipment or physiology used in doing this. See also Doppler effect lidar radar

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.

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

ThesaurusLegend: Synonyms Related Words Antonyms

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 [ˈsəʊnɑːʳ] N → sonar m

sonar [ˈsəʊnɑː^r] n → sonar m

sonar

n → Sonar(gerät) nt, → Echolot nt

sonar [ˈsəʊnɑːʳ] n → sonar m inv

Mentioned in	?		References in periodicals archive	?		Dictionary browser	?		Full browser	?
acoustic minehunting asdic blare chime Chink clang clank contact lost echo sounder echolocation gibbering Langevin Paul lidar mobile inshore undersea warfare unit navigational instrument pigboat pinger pulse generator ring	When asked what he would suggest for the new boat, Wittnam pointed to an acoustic radar antenna that can capture and magnify shots to make a positive identification of a weapon. Controlling the waterways: brown-water navy begins hunt for new ... by Wagner, Breanne / National Defense	acousma acoustic acoustic aphasia acoustic buoy acoustic circuit acoustic coupler acoustic delay line acoustic device Acoustic duct acoustic feature acoustic figures acoustic gramophone acoustic guitar acoustic impedance acoustic intelligence acoustic jamming acoustic meatus acoustic mine acoustic minehunting acoustic modem acoustic nerve acoustic phenomenon acoustic phonetics acoustic power acoustic projection Acoustic radar acoustic radiation pressure acoustic reactance acoustic resistance acoustic screen acoustic shock acoustic spectrography acoustic spectrum acoustic storage Acoustic telegraph Acoustic vessels acoustic warfare acoustic warfare counter-countermeasures acoustic warfare countermeasures acoustic warfare support measures acoustic wave Acoustical acoustical surveillance acoustically acoustician acousticophobia acoustics acoustoelectric acoustoelectronic acoustooptics ACP	acoustic phenomenon Acoustic phonetics Acoustic phonon Acoustic phonon Acoustic phonon acoustic plaster Acoustic Position acoustic position reference system Acoustic Positioning and Navigation System acoustic power acoustic power Acoustic Prediction Program Acoustic Probe Acoustic Processing System Acoustic Processor Acoustic Processor Operating Station Acoustic Processor Technical Refresh Acoustic Processor/Tethered Sonar Acoustic Product Request Acoustic Products Division Acoustic Proficiency Trainer acoustic projection Acoustic Projection System Acoustic Protective Measures Acoustic Pulse Reflectometry Acoustic Puncture Assist Device Acoustic Quantification Acoustic radar acoustic radiation acoustic radiation acoustic radiation acoustic radiation Acoustic Radiation Force Impulse Imaging acoustic radiation pressure acoustic radiation pressure acoustic radiator Acoustic radiometer Acoustic Range Finding/Finder Acoustic Range Prediction System Acoustic Rapid COTS Insertion acoustic ratio acoustic reactance acoustic reactance acoustic reactance unit acoustic receiver acoustic reciprocity theorem Acoustic Recording Unit Acoustic Reference Level Plan acoustic reflection coefficient acoustic reflectivity Acoustic reflex Acoustic reflex Acoustic reflex Acoustic reflex Acoustic reflex acoustic reflex enclosure Acoustic Reflex Latency Test acoustic reflex test

Mentioned in

References in periodicals archive

Dictionary browser

Full browser

acoustic minehunting
asdic
blare
chime
Chink
clang
clank
contact lost
echo sounder
echolocation
gibbering
Langevin Paul
lidar
mobile inshore undersea warfare unit
navigational instrument
pigboat
pinger
pulse generator
ring

When asked what he would suggest for the new boat, Wittnam pointed to an acoustic radar antenna that can capture and magnify shots to make a positive identification of a weapon.

Controlling the waterways: brown-water navy begins hunt for new ... by Wagner, Breanne / National Defense