Mobile positioning of tagged aquatic animals using acoustic telemetry with a synthetic hydrophone array
(SYNAPS: Synthetic Aperture Positioning System).
It consists of two SAS systems: a high frequency (HF) synthetic aperture sonar and a long-wavelength broadband (BB) synthetic aperture sonar, wherein two separate projectors share a common hydrophone array
, as shown in Figure 1.
Deirdre Slevin, who was with the group, said the RV Celtic Mist carried a towed hydrophone array
for acoustic detections and surveyed offshore shelf edge waters as well as inshore and coastal waters to provide the maximum variety of species and marine habitats.
Early each morning, in the base's onshore acoustics room, researchers began by identifying where whales were located within the hydrophone array
Acoustic signals generated by pipeline leaks are detected by a system composed of a hydrophone array
, a preamplifier and a cable driver.
The hydrophone array
pointing out to the Pacific is the same as the Hubble telescope pointing out to the stars.
That day, the hydrophone array
picked up distinctive earthquake tremors caused by magma moving upward through the crust.
The output from the hydrophone array
is processed to produce an image of the subterranean geology and is used by exploration geophysicists to identify potentially rich oil fields for future drilling.
As part of the experiment, WHOI researchers Keith von der Heydt and John Kemp designed and deployed an autonomous hydrophone array
that recorded the longest, highest-quality shallow-water acoustics data set ever collected.
6 kilometers of new 2D data, acquired using a 6,000-meter digital hydrophone array
23, 1998--In late August 1998, three years after being entrenched into the seabed at a water depth of 500 m, the permanent hydrophone array
above part of the Foinaven reservoir on the Atlantic margin was reconnected to a recording system onboard the Schlumberger Geco-Prakla vessel "MV Polar Queen.
Bolt's geophysical acoustic sources will fit well with our existing hydrophone arrays
, which listen for the echoes from these sound sources.