MICHAEL JOHN BUCKINGHAM
Pilots at Caminito Del Cid, La Jolla, CA
License number
California A2721412
Issued Date
Sep 2015
Expiration Date
Sep 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
7956 Caminito Del Cid, La Jolla, CA 92037
Professional information
Acoustic Imaging In The Ocean Using Ambinet Noise
US Patent:
5333129, Jul 26, 1994
Filed:
Feb 3, 1993
Appl. No.:
8/012894
Inventors:
Michael J. Buckingham - La Jolla CA
Assignee:
The Regents of the University of California - Oakland CA
International Classification:
G01S 1500
US Classification:
367 7
Abstract:
An array of acoustic sensors is positioned near the object to be imaged so that an array of detection beams impinge upon the surface of the object. The ambient noise in the ocean which is generated by both natural and manmade phenomena is reflected off of the target object and collected by the acoustic sensors. Each beam corresponds to a single pixel of an image of the object. The amplitude and frequency differences between the signals derived from each beam permit contrast to be developed between the pixels so that an image is formed. A first embodiment utilizes a parabolic or spherical reflector to focus the noise reflected from the object onto one or more sensors. A two dimensional array of sensors is required to produce an image. A second embodiment uses a phased array of acoustic sensors to form an image, with the phased array of sensors being used to generate a large number of scanned beams, each beam corresponding to one pixel of the image. Motion pictures can be generated by updating the image formed by the a multi-sensor array at a pre-determined frequency.