sonar


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so·nar

 (sō′när′)
n.
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)
n
(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)]

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)]
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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.

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.")
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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 returnsonar - 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"
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
kaikuluotain

sonar

[ˈsəʊnɑːʳ] Nsonar m

sonar

[ˈsəʊnɑːr] nsonar m

sonar

nSonar(gerät) nt, → Echolot nt

sonar

[ˈsəʊnɑːʳ] nsonar m inv
References in periodicals archive ?
The new study showed for the first time that bats catch insects by sonar as it is far more efficient than using vision, even during twilight.
Raytheon has won a $65,801,757 modification contract for Lot XIII Airborne Low Frequency Sonar systems for the U.
Today's sonar systems not only provide optional, integrated CCTV systems, but can also include inclinometers, footage counters and software system compatibility for identifying and coding defects using NASSCO's Pipeline Assessment Certification Program (PACP) system.
Beaked whales have stranded on beaches during sonar training exercises, prompting concern that sonar disrupted their behavior and precipitated the strandings.
Raytheon Company has completed delivery of the electronics for the AN/SQQ-90 tactical sonar suite, the complex sonar for the first ship of the U.
I don't think dolphins are sitting there playing with numbers in their heads," Leighton says, but their brains might be using mathematics to decipher bubble-scattered sonar signals.
Global SONAR Systems Market 2015-2019, has been prepared based on an in-depth market analysis with inputs from industry experts.
The truth is that LFA Sonar may have much worse consequences for whales and other marine life than the sonar used in the Bahamas incident.
The linkage between whales and sonar isn't hard to figure.
1 -- 2 -- color) Burbank's Don Iovino, 66, teaches seminars on using sonar, such as the one pictured, to help anglers.
The sounds made by mid-frequency sonar are within the hearing range of humans as well as whales.
Experimental Low Frequency Active (LFA) Sonar, at peak level, produces a noise equivalent to standing five feet from the space shuttle on take-off.