FR2433761A1 - DEVICE FOR DETERMINING THE DIRECTION OF SIGNALS RECEIVED IN THE IMMEDIATE ACTION AREA OF A SONAR INSTALLATION - Google Patents

DEVICE FOR DETERMINING THE DIRECTION OF SIGNALS RECEIVED IN THE IMMEDIATE ACTION AREA OF A SONAR INSTALLATION

Info

Publication number
FR2433761A1
FR2433761A1 FR7920669A FR7920669A FR2433761A1 FR 2433761 A1 FR2433761 A1 FR 2433761A1 FR 7920669 A FR7920669 A FR 7920669A FR 7920669 A FR7920669 A FR 7920669A FR 2433761 A1 FR2433761 A1 FR 2433761A1
Authority
FR
France
Prior art keywords
signals received
determining
action area
immediate action
fourier transformation
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.)
Granted
Application number
FR7920669A
Other languages
French (fr)
Other versions
FR2433761B1 (en
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.)
Fried Krupp AG
Original Assignee
Fried Krupp AG
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 Fried Krupp AG filed Critical Fried Krupp AG
Publication of FR2433761A1 publication Critical patent/FR2433761A1/en
Application granted granted Critical
Publication of FR2433761B1 publication Critical patent/FR2433761B1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/42—Simultaneous measurement of distance and other co-ordinates

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

Ce dispositif émet des signaux pulsés d'une fréquence centrale fo et d'un largeur de bande connue B et les reçoit au moyen d'un nombre N de transducteurs de réception d'un système récepteur, dans lequel les transducteurs de réception sont disposés le long d'une ligne de base à des intervalles réguliers d. Ce dispositif qui utilise la transformation de Fourier complexe permet de n'effectuer pour toutes les fréquences contenues dans la largeur de bande B du signal émis, qu'une unique transformation de Fourier complexe et, par conséquent, d'assurer une détermination de la direction de signaux reçus dans une zone angulaire exclusivement déterminée par l'espacement d des transducteurs de réception et la fréquence centrale fo des signaux pulsés émis.This device emits pulsed signals of a central frequency fo and of a known bandwidth B and receives them by means of a number N of reception transducers of a receiver system, in which the reception transducers are arranged on the along a baseline at regular intervals d. This device which uses the complex Fourier transformation makes it possible to perform for all the frequencies contained in the bandwidth B of the transmitted signal, only a single complex Fourier transformation and, consequently, to ensure a determination of the direction. of signals received in an angular zone exclusively determined by the spacing d of the receiving transducers and the center frequency fo of the pulsed signals transmitted.

FR7920669A 1978-08-14 1979-08-14 DEVICE FOR DETERMINING THE DIRECTION OF SIGNALS RECEIVED IN THE IMMEDIATE ACTION AREA OF A SONAR INSTALLATION Expired FR2433761B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7833192A GB2027885B (en) 1978-08-14 1978-08-14 Apparatus for determing the direction of incidence of received signals in the short range zone of a sonar istallati/on

Publications (2)

Publication Number Publication Date
FR2433761A1 true FR2433761A1 (en) 1980-03-14
FR2433761B1 FR2433761B1 (en) 1985-08-23

Family

ID=10499027

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7920669A Expired FR2433761B1 (en) 1978-08-14 1979-08-14 DEVICE FOR DETERMINING THE DIRECTION OF SIGNALS RECEIVED IN THE IMMEDIATE ACTION AREA OF A SONAR INSTALLATION

Country Status (4)

Country Link
AU (1) AU525129B2 (en)
DE (1) DE2927790C2 (en)
FR (1) FR2433761B1 (en)
GB (1) GB2027885B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465233B1 (en) * 1979-09-10 1985-11-08 Plessey Overseas ULTRASONIC RADAR DETERMINATION APPARATUS
DE3017797A1 (en) * 1980-05-09 1981-11-12 Fried. Krupp Gmbh, 4300 Essen METHOD FOR DETERMINING THE DIRECTIONS
GB2279456B (en) * 1989-07-24 1995-05-24 Marconi Gec Ltd Sonar direction finding

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657693A (en) * 1965-11-15 1972-04-18 Control Data Corp Multiple beam scanned planar array
FR2294589A1 (en) * 1974-12-10 1976-07-09 Cit Alcatel TRACK TRAINING DEVICE USING DETECTORS DISTRIBUTED ON A CIRCULAR BASIS
FR2294454A1 (en) * 1974-12-14 1976-07-09 Krupp Gmbh DIRECTION DETERMINATION METHOD AND DEVICE FOR LOW RANGE AND WIDE OPENING ANGLE SONAR
FR2373069A1 (en) * 1976-12-01 1978-06-30 Raytheon Co BEAM TRAINING DEVICE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE786437A (en) * 1971-07-28 1973-01-19 Cit Alcatel FOURIER TRANSFORMATION HOLOGRAPHIC PROBE
FR2243447B1 (en) * 1973-09-11 1976-06-18 Cit Alcatel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657693A (en) * 1965-11-15 1972-04-18 Control Data Corp Multiple beam scanned planar array
FR2294589A1 (en) * 1974-12-10 1976-07-09 Cit Alcatel TRACK TRAINING DEVICE USING DETECTORS DISTRIBUTED ON A CIRCULAR BASIS
FR2294454A1 (en) * 1974-12-14 1976-07-09 Krupp Gmbh DIRECTION DETERMINATION METHOD AND DEVICE FOR LOW RANGE AND WIDE OPENING ANGLE SONAR
FR2373069A1 (en) * 1976-12-01 1978-06-30 Raytheon Co BEAM TRAINING DEVICE

Also Published As

Publication number Publication date
AU4988379A (en) 1981-02-19
DE2927790C2 (en) 1986-12-11
GB2027885B (en) 1982-12-01
FR2433761B1 (en) 1985-08-23
AU525129B2 (en) 1982-10-21
DE2927790A1 (en) 1980-02-28
GB2027885A (en) 1980-02-27

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Legal Events

Date Code Title Description
CD Change of name or company name
CN Change in juridical nature
TP Transmission of property
ST Notification of lapse