How exactly do sonar / sonobuoys work? Are they effective at detecting the location of a sound?
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Sonobuoys come in different varieties: active, passive, and others.
Passive sonobuoys merely listen and pass acoustic data back to the ship via radio transmission.
Active sonobuoys send out unique pings. Knowing the position of the sonobuoys and the ship, the sonar suite uses the difference between when the sonobuoy’s ping and its echoes are received to locate acoustically reflective objects.
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