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- Sonar abstract "Sonar (originally an acronym for SOund Navigation And Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels. Two types of technology share the name "sonar": passive sonar is essentially listening for the sound made by vessels; active sonar is emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used in air for robot navigation, and SODAR (an upward looking in-air sonar) is used for atmospheric investigations. The term sonar is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low (infrasonic) to extremely high (ultrasonic). The study of underwater sound is known as underwater acoustics or hydroacoustics.".
- Sonar thumbnail Motte-Picquet-tugged-sonar.jpg?width=300.
- Sonar wikiPageExternalLink 1999SPIE.3711....2B.
- Sonar wikiPageExternalLink v=onepage&q&f=true.
- Sonar wikiPageExternalLink 2005_04_22_1.jpg.
- Sonar wikiPageExternalLink 678.
- Sonar wikiPageExternalLink oai?&verb=getRecord&metadataPrefix=html&identifier=ADA415201.
- Sonar wikiPageExternalLink www.acoustics.washington.edu.
- Sonar wikiPageExternalLink single_beam.htm.
- Sonar wikiPageExternalLink AcousticsUnpacked.asp.
- Sonar wikiPageExternalLink mil-030425-navsea04.htm.
- Sonar wikiPageExternalLink sympafae.
- Sonar wikiPageExternalLink Sonars-marine-_envir_82682a.pdf.
- Sonar wikiPageExternalLink 2005_1202Hydroacoustics-Lakes.doc.
- Sonar wikiPageExternalLink sensors_sonar.shtml.
- Sonar wikiPageExternalLink CountingSalmonWA.pdf.
- Sonar wikiPageExternalLink Acoustic_protocols.pdf.
- Sonar wikiPageExternalLink A210304.html?PHPSESSID=a4b241c502255604bf53439965a04a66.
- Sonar wikiPageExternalLink 0,8816,804015,00.html.
- Sonar wikiPageID "29438".
- Sonar wikiPageRevisionID "603531022".
- Sonar description "Recording of active SONAR pings.".
- Sonar filename "Sonar_pings.ogg".
- Sonar format Ogg.
- Sonar hasPhotoCollection Sonar.
- Sonar title "Sonar pings".
- Sonar subject Category:British_inventions.
- Sonar subject Category:Sonar.
- Sonar comment "Sonar (originally an acronym for SOund Navigation And Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels. Two types of technology share the name "sonar": passive sonar is essentially listening for the sound made by vessels; active sonar is emitting pulses of sounds and listening for echoes.".
- Sonar label "Sonar".
- Sonar label "Sonar".
- Sonar label "Sonar".
- Sonar label "Sonar".
- Sonar label "Sonar".
- Sonar label "Sonar".
- Sonar label "Sonar".
- Sonar label "Sonar".
- Sonar label "Гидролокатор".
- Sonar label "سونار".
- Sonar label "ソナー".
- Sonar label "聲納".
- Sonar sameAs Sonar.
- Sonar sameAs Sonar.
- Sonar sameAs Σόναρ.
- Sonar sameAs Sonar.
- Sonar sameAs Sonar.
- Sonar sameAs Sonar.
- Sonar sameAs Sonar.
- Sonar sameAs ソナー.
- Sonar sameAs 소나.
- Sonar sameAs Sonar.
- Sonar sameAs Sonar.
- Sonar sameAs Sonar.
- Sonar sameAs m.0790c.
- Sonar sameAs Q133220.
- Sonar sameAs Q133220.
- Sonar wasDerivedFrom Sonar?oldid=603531022.
- Sonar depiction Motte-Picquet-tugged-sonar.jpg.
- Sonar isPrimaryTopicOf Sonar.