| 21. | Satellites can track an individual ship easily, and even submarines are usually detected by hydrophone arrays.
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| 22. | "Venturer " s hydrophone operator noticed a strange sound which he could not identify.
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| 23. | Hydrophone sensor systems are used by the oil industry as well as a few countries'navies.
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| 24. | When a hydrophone / transducer receives a specific interrogation signal it responds by transmitting a specific reply signal.
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| 25. | Data is transmitted from the sensors using wireless acoustic telemetry and is received by a hull mounted hydrophone.
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| 26. | In air, sound pressure can be measured using a microphone, and in water with a hydrophone.
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| 27. | Purely from the standpoint of detection, towed hydrophone arrays offer a long baseline and exceptional measurement capability.
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| 28. | Launders tracked the U-boat by hydrophone, hoping she would surface and allow a clear shot.
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| 29. | Working with researchers, they will record dolphin sounds by hydrophone and take notes about their markings and behavior.
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| 30. | Depth charge rails were installed in the stern and a Type 93 hydrophone set was fitted in the bow.
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