Title:
SUPER DIRECTIONAL BEAMFORMING DESIGN AND IMPLEMENTATION
Document Type and Number:
WIPO Patent Application WO2001037435
Kind Code:
A3
Abstract:
A sensor array (10 sub.1-N) receiving system which incorporates one or more filters (16 sub.1-N) that are capable of adaptive and/or fixed operation. The filters are defined by a multiple of coefficients and the coefficients are set so as to maximize the signal to noise ratio of the receiving array's output. In one preferred embodiment, the filter coefficients are adaptively determined and are faded into a predetermined group of fixed values upon the occurrence of a specified event. Thereby, allowing the sensor array (10 sub.1-N) to operate in both the adaptive and fixed modes, and providing the array with the ability to employ the mode most favorable for a given operating environment. In another preferred embodiment, the filter coefficients are set to a fixed group of values which are determined to be optimal for a predefined noise environment.
Inventors:
MARASH JOSEPH
BERDUGO BARUCH
BERDUGO BARUCH
Application Number:
PCT/US2000/041537
Publication Date:
October 11, 2001
Filing Date:
October 25, 2000
Export Citation:
Assignee:
ANDREA ELECTRONICS CORP (US)
International Classes:
G10K11/34; H01Q3/40; H04R1/20; H01Q25/00; H03H21/00; H04R1/40; H04R3/00; (IPC1-7): H04R3/00; G01S3/80
Foreign References:
| US5825898A | 1998-10-20 | |||
| US6178248B1 | 2001-01-23 | |||
| US5511128A | 1996-04-23 | |||
| US5909460A | 1999-06-01 |
Other References:
MONZINGO AND MILLER: "Introduction to adaptive arrays", 1980, JOHN WILEY & SONS, INC., XP002940080
GRIFFITHS L.J. AND JIM C.W.: "An alternative approach to linearly constrained adaptive beamforming", IEEE TRANS. ON ANTENNAS, vol. AP-30, no. 1, January 1982 (1982-01-01), pages 27 - 34, XP002940081
GRIFFITHS L.J. AND JIM C.W.: "An alternative approach to linearly constrained adaptive beamforming", IEEE TRANS. ON ANTENNAS, vol. AP-30, no. 1, January 1982 (1982-01-01), pages 27 - 34, XP002940081
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