Abstract
A large-aperture planar array has been constructed for an indirect sensing of the vertical oceanic density fine structure distribution. The array is approximately 14 m square and consists of 128 hydrophones arranged in a horizontal plane around an 8-kW sound source. Operating frequencies are from 2 to 20 kHz; pulse durations are from 12 to 1 msec. The array is towed to sea, submerged to a depth of 20 m, and suspended from R/P ORB (Oceanographic Research Buoy). A spring compression system decouples array motion from the motion of the surface support vessel for vertical excursions of up to 3 m. The back-scattered energy from each transmission is clipped and digitized in 1024 depth intervals, covering approximately the upper 400 m of the water colume. Beamforming of the information at each depth interval allows discrimination between specular reflectors and point scatterers. [This research is supported by the Advanced Research Projects Agency.]
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
