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horizontal obstacle sonar |
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horizontal obstacle sonar [‚här·ə′zänt·əl ¦äb·stə·kəl ′sō‚när] (navigation) A constant-transmission, frequency-modulated sonar used in underwater navigation to detect objects ahead of a submersible vehicle and to determine the bearing and range of specially designed transponders. Abbreviated HOS. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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