FR2413666A1 - Directional channels former in sonar system - has hydrophones controlled by sampling signals with A=D converter connected to interpolation circuit - Google Patents

Directional channels former in sonar system - has hydrophones controlled by sampling signals with A=D converter connected to interpolation circuit

Info

Publication number
FR2413666A1
FR2413666A1 FR7739487A FR7739487A FR2413666A1 FR 2413666 A1 FR2413666 A1 FR 2413666A1 FR 7739487 A FR7739487 A FR 7739487A FR 7739487 A FR7739487 A FR 7739487A FR 2413666 A1 FR2413666 A1 FR 2413666A1
Authority
FR
France
Prior art keywords
signals
hydrophones
controlled
interpolation circuit
former
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
FR7739487A
Other languages
French (fr)
Other versions
FR2413666B1 (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.)
TECH RADIOELECT ELECTRO FS
Original Assignee
TECH RADIOELECT ELECTRO FS
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 TECH RADIOELECT ELECTRO FS filed Critical TECH RADIOELECT ELECTRO FS
Priority to FR7739487A priority Critical patent/FR2413666A1/en
Publication of FR2413666A1 publication Critical patent/FR2413666A1/en
Application granted granted Critical
Publication of FR2413666B1 publication Critical patent/FR2413666B1/fr
Granted 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
    • G01S3/805—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal
    • 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

Landscapes

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

Abstract

The receiving antennal for sonal equipment comprise several hydrophones arranged in geometrical patterns. Signals arriving from a particular direction are formed into channels by a sampling system. Several non-directional hydrophones (C) receiving sonar signals have gating circuits(P) at their outputs whose opening is controlled by sampling signals (E) from a time base or clock (11). An OR-gate (12) allows signals to pass to an analogue-to-digital convertor (13) which generates binary word for each sample. An interpolation circuit (35) processes binary words by adding further binary samples to form signals for the different channels.
FR7739487A 1977-12-28 1977-12-28 Directional channels former in sonar system - has hydrophones controlled by sampling signals with A=D converter connected to interpolation circuit Granted FR2413666A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7739487A FR2413666A1 (en) 1977-12-28 1977-12-28 Directional channels former in sonar system - has hydrophones controlled by sampling signals with A=D converter connected to interpolation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7739487A FR2413666A1 (en) 1977-12-28 1977-12-28 Directional channels former in sonar system - has hydrophones controlled by sampling signals with A=D converter connected to interpolation circuit

Publications (2)

Publication Number Publication Date
FR2413666A1 true FR2413666A1 (en) 1979-07-27
FR2413666B1 FR2413666B1 (en) 1982-12-17

Family

ID=9199439

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7739487A Granted FR2413666A1 (en) 1977-12-28 1977-12-28 Directional channels former in sonar system - has hydrophones controlled by sampling signals with A=D converter connected to interpolation circuit

Country Status (1)

Country Link
FR (1) FR2413666A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2677132A1 (en) * 1991-05-28 1992-12-04 Thomson Csf METHOD FOR FORMING A PLURALITY OF SONAR PATHWAYS AND DEVICE FOR CARRYING OUT SAID METHOD.
EP0642032A2 (en) * 1993-09-08 1995-03-08 ISHIKAWA MANUFACTURING CO., Ltd. Sound source determining system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1173365A (en) * 1965-08-30 1969-12-10 Magnavox Co Improvements in or relating to beam forming apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1173365A (en) * 1965-08-30 1969-12-10 Magnavox Co Improvements in or relating to beam forming apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV8014/77 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2677132A1 (en) * 1991-05-28 1992-12-04 Thomson Csf METHOD FOR FORMING A PLURALITY OF SONAR PATHWAYS AND DEVICE FOR CARRYING OUT SAID METHOD.
WO1992021991A1 (en) * 1991-05-28 1992-12-10 Thomson-Csf Method for forming a plurality of sonar channels and device for implementing such method
EP0642032A2 (en) * 1993-09-08 1995-03-08 ISHIKAWA MANUFACTURING CO., Ltd. Sound source determining system
EP0642032A3 (en) * 1993-09-08 1995-11-22 Ishikawa Manufacturing Co Ltd Sound source determining system.

Also Published As

Publication number Publication date
FR2413666B1 (en) 1982-12-17

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Legal Events

Date Code Title Description
ST Notification of lapse