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1. (WO2001001866) ANGULAR SCATTER IMAGING SYSTEM USING TRANSLATING APERTURES AND METHOD THEREOF

Pub. No.:    WO/2001/001866    International Application No.:    PCT/US2000/018652
Publication Date: Fri Jan 12 00:59:59 CET 2001 International Filing Date: Sat Jul 08 01:59:59 CEST 2000
IPC: G01S 7/52
G01S 15/89
Applicants: UNIVERSITY OF VIRGINIA PATENT FOUNDATION
DUKE UNIVERSITY
WALKER, William, F.
MCALLISTER, Michael, J.
TRAHEY, Gregg, E.
Inventors: WALKER, William, F.
MCALLISTER, Michael, J.
TRAHEY, Gregg, E.
Title: ANGULAR SCATTER IMAGING SYSTEM USING TRANSLATING APERTURES AND METHOD THEREOF
Abstract:
The angular imaging system, and related method utilizes translating apertures to acquire data at a number of angles of interrogation. For omnidirectional scatterers, that is scatterers which emit a uniform sound field in all directions when insonified, the translating apertures should theoretically yield identical speckle patterns at all angles of interrogation. The result is in strong contrast to previously applied convention angular scatter measurement methods which produced rapidly varying speckle patterns with interrogation angle. Thus by using the translating apertures, using the transmit aperture translator (62), and the receive aperture translator (72), it is possible to acquire data for which the only variation in received signal with angle is due to the intrinsic scattering of the target.