WO2007025225A3 - Beam former using phase difference enhancement - Google Patents

Beam former using phase difference enhancement Download PDF

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Publication number
WO2007025225A3
WO2007025225A3 PCT/US2006/033391 US2006033391W WO2007025225A3 WO 2007025225 A3 WO2007025225 A3 WO 2007025225A3 US 2006033391 W US2006033391 W US 2006033391W WO 2007025225 A3 WO2007025225 A3 WO 2007025225A3
Authority
WO
WIPO (PCT)
Prior art keywords
phase difference
signals
beam former
axis
difference enhancement
Prior art date
Application number
PCT/US2006/033391
Other languages
French (fr)
Other versions
WO2007025225A2 (en
Inventor
Jon C Taenzer
Original Assignee
Step Comm Corp
Jon C Taenzer
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Step Comm Corp, Jon C Taenzer filed Critical Step Comm Corp
Publication of WO2007025225A2 publication Critical patent/WO2007025225A2/en
Publication of WO2007025225A3 publication Critical patent/WO2007025225A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52003—Techniques for enhancing spatial resolution of targets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/2813—Means providing a modification of the radiation pattern for cancelling noise, clutter or interfering signals, e.g. side lobe suppression, side lobe blanking, null-steering arrays
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G10K11/346—Circuits therefor using phase variation

Abstract

Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality and noise discrimination.
PCT/US2006/033391 2005-08-26 2006-08-25 Beam former using phase difference enhancement WO2007025225A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/213,445 US7619563B2 (en) 2005-08-26 2005-08-26 Beam former using phase difference enhancement
US11/213,445 2005-08-26

Publications (2)

Publication Number Publication Date
WO2007025225A2 WO2007025225A2 (en) 2007-03-01
WO2007025225A3 true WO2007025225A3 (en) 2009-04-16

Family

ID=37772489

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/033391 WO2007025225A2 (en) 2005-08-26 2006-08-25 Beam former using phase difference enhancement

Country Status (2)

Country Link
US (2) US7619563B2 (en)
WO (1) WO2007025225A2 (en)

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Also Published As

Publication number Publication date
WO2007025225A2 (en) 2007-03-01
US8111192B2 (en) 2012-02-07
US7619563B2 (en) 2009-11-17
US20100109951A1 (en) 2010-05-06
US20070046540A1 (en) 2007-03-01

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