Abstract: An array of acoustic signal sources and sensors are positioned in a fluid. Acoustic signals propagated through the medium are subjected to phase differences as they pass through fluid currents. An eikonal description of the acoustic waves propagating through the fluid medium is used to derive the fluid currents. Fluid currents are measured in a multiplicity of acoustic paths extending from the acoustic sources to the sensors, using acoustic phase tomography.
Type:
Grant
Filed:
January 12, 1994
Date of Patent:
July 2, 1996
Assignee:
Hughes Aircraft Company
Inventors:
David B. Chang, Victor Vali, Donald H. Webb