The receiving array in passive systems such as towed arrays or wide aperture ranging arrays must be able to detect signals with unknown frequency content, and therefore must operate over a frequency ...

Hydrophones are also available in arrays. An array is a set of hydrophones wired together in series or parallel and typically towed underwater. In the case of arrays, sensitivity ratings are given for ...

Quack-like sounds heard off the coast of New Zealand in the 1980s might have been a form of communication. Mysterious, ...

Looking from the stern of the ship as it tows the long horizontal array of hydrophones. The tow cable can be seen going through the metal horn at the stern. The hydrophone array is several hundred ...