FR2663489B1 - METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS. - Google Patents

METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS.

Info

Publication number
FR2663489B1
FR2663489B1 FR9007512A FR9007512A FR2663489B1 FR 2663489 B1 FR2663489 B1 FR 2663489B1 FR 9007512 A FR9007512 A FR 9007512A FR 9007512 A FR9007512 A FR 9007512A FR 2663489 B1 FR2663489 B1 FR 2663489B1
Authority
FR
France
Prior art keywords
low frequency
frequency signals
acoustic detection
acoustic
detection
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
FR9007512A
Other languages
French (fr)
Other versions
FR2663489A1 (en
Inventor
Lagier Michel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR9007512A priority Critical patent/FR2663489B1/en
Priority to AU79643/91A priority patent/AU7964391A/en
Priority to PCT/FR1991/000443 priority patent/WO1991019996A1/en
Publication of FR2663489A1 publication Critical patent/FR2663489A1/en
Application granted granted Critical
Publication of FR2663489B1 publication Critical patent/FR2663489B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction
    • G01S3/803—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from receiving transducers or transducer systems having differently-oriented directivity characteristics
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/86—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves with means for eliminating undesired waves, e.g. disturbing noises
FR9007512A 1990-06-15 1990-06-15 METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS. Expired - Lifetime FR2663489B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9007512A FR2663489B1 (en) 1990-06-15 1990-06-15 METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS.
AU79643/91A AU7964391A (en) 1990-06-15 1991-06-04 Low-frequency signal acoustic detection method
PCT/FR1991/000443 WO1991019996A1 (en) 1990-06-15 1991-06-04 Low-frequency signal acoustic detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9007512A FR2663489B1 (en) 1990-06-15 1990-06-15 METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS.

Publications (2)

Publication Number Publication Date
FR2663489A1 FR2663489A1 (en) 1991-12-20
FR2663489B1 true FR2663489B1 (en) 1992-09-11

Family

ID=9397670

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9007512A Expired - Lifetime FR2663489B1 (en) 1990-06-15 1990-06-15 METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS.

Country Status (3)

Country Link
AU (1) AU7964391A (en)
FR (1) FR2663489B1 (en)
WO (1) WO1991019996A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2533323C1 (en) * 2013-03-21 2014-11-20 Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) Vector receiving device
RU2569201C1 (en) * 2014-06-27 2015-11-20 Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) Combined hydroacoustic receiver

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452115B1 (en) * 1979-03-23 1985-10-18 Sperry Corp ULTRASONIC RADAR DETECTION ASSEMBLY
US4283767A (en) * 1979-05-03 1981-08-11 Raytheon Company Multiple correlator reference processor
JPS57124267A (en) * 1981-01-26 1982-08-03 Oki Electric Ind Co Ltd Elimination system for noise of sonar
JPS59174723A (en) * 1983-03-25 1984-10-03 Fujitsu Ltd Sound monitoring device
FR2615682B1 (en) * 1987-05-19 1989-07-13 Thomson Csf GEOPHONE COMPRISING A SENSITIVE ELEMENT IN PIEZOELECTRIC POLYMER

Also Published As

Publication number Publication date
FR2663489A1 (en) 1991-12-20
WO1991019996A1 (en) 1991-12-26
AU7964391A (en) 1992-01-07

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Legal Events

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ST Notification of lapse