Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun 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.
- noun An apparatus, as one in a submarine, using sonar.
- noun Echolocation.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun nautical
echolocation - noun nautical A device that uses
hydrophones (in the same manner asradar ) to locate objects underwater.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun 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
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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Their echolocation sonar is far beyond our military science.
Brenda Peterson: Japan: Stop Killing Our Evolutionary Elders and Help Save Our Oceans Brenda Peterson 2010
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It was detected about five years ago with sonar from a surface vessel.
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If your sonar is marking fish at 25 feet, for example, let out about 3.5 colors.
Four Ways to Troll for Trout, Salmon, Crappies, Walleyes, and Northern Pike 2009
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Their echolocation sonar is far beyond our military science.
Brenda Peterson: Japan: Stop Killing Our Evolutionary Elders and Help Save Our Oceans Brenda Peterson 2010
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Electric trolling motors have become extraordinarily sophisticated, with built-in sonar transducers, wireless remote controls, and improved mounting systems adding to both utility and price.
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Their echolocation sonar is far beyond our military science.
Brenda Peterson: Japan: Stop Killing Our Evolutionary Elders and Help Save Our Oceans Brenda Peterson 2010
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Side-imaging sonar is getting most of the buzz in fishing electronics this season, and for good reason: For finding gamefish, baitfish, and likely structure, these units have no equal in the consumer market.
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"Effective use of active sonar is a vital and perishable skill set that must be continually practiced," he added, calling anti-submarine warfare the top priority for the U.S. Pacific Fleet Commander.
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The Navy claims that training sailors to detect submarines using mid-frequency active sonar is crucial to military operations in the Pacific.
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The steam propulsion system are virtually silent and active sonar is the only option for detection.
trivet commented on the word sonar
SOund Navigation And Ranging
February 28, 2007