FR2412080A1 - Sonar system for surveillance along tracks - employs transducers arranged in lines with spacing greater than one wavelength - Google Patents

Sonar system for surveillance along tracks - employs transducers arranged in lines with spacing greater than one wavelength

Info

Publication number
FR2412080A1
FR2412080A1 FR7738090A FR7738090A FR2412080A1 FR 2412080 A1 FR2412080 A1 FR 2412080A1 FR 7738090 A FR7738090 A FR 7738090A FR 7738090 A FR7738090 A FR 7738090A FR 2412080 A1 FR2412080 A1 FR 2412080A1
Authority
FR
France
Prior art keywords
wavelength
lines
sonar system
transducers
transducers arranged
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.)
Withdrawn
Application number
FR7738090A
Other languages
French (fr)
Inventor
Noel Clavelloux
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 FR7738090A priority Critical patent/FR2412080A1/en
Publication of FR2412080A1 publication Critical patent/FR2412080A1/en
Withdrawn legal-status Critical Current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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/87—Combinations of sonar systems
    • 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
    • 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

Landscapes

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

Abstract

The sonar system for surveillance along predetermined tracks searches for submerged objects at or near to bottom of sea. This is performed by reduced number of transducers and associated electronic circuits. Receiving transducers are arranged in lines which may be curved and with spacing which is greater than one wavelength. The transducer outputs are phase shifted elements having several outputs. Summers add phase shift signals from same output or each element to provide channel outputs. These signals are passed via circuits to observation system in sync. with a controller transmitting when transducers emit waves.
FR7738090A 1977-12-16 1977-12-16 Sonar system for surveillance along tracks - employs transducers arranged in lines with spacing greater than one wavelength Withdrawn FR2412080A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7738090A FR2412080A1 (en) 1977-12-16 1977-12-16 Sonar system for surveillance along tracks - employs transducers arranged in lines with spacing greater than one wavelength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7738090A FR2412080A1 (en) 1977-12-16 1977-12-16 Sonar system for surveillance along tracks - employs transducers arranged in lines with spacing greater than one wavelength

Publications (1)

Publication Number Publication Date
FR2412080A1 true FR2412080A1 (en) 1979-07-13

Family

ID=9198959

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7738090A Withdrawn FR2412080A1 (en) 1977-12-16 1977-12-16 Sonar system for surveillance along tracks - employs transducers arranged in lines with spacing greater than one wavelength

Country Status (1)

Country Link
FR (1) FR2412080A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462092A (en) * 1980-05-15 1984-07-24 Matsushita Electric Industrial Company, Limited Arc scan ultrasonic transducer array

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270336A (en) * 1963-06-25 1966-08-30 Martin Marietta Corp Eliminating multiple responses in a grating lobe antenna array

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270336A (en) * 1963-06-25 1966-08-30 Martin Marietta Corp Eliminating multiple responses in a grating lobe antenna array

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462092A (en) * 1980-05-15 1984-07-24 Matsushita Electric Industrial Company, Limited Arc scan ultrasonic transducer array

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Legal Events

Date Code Title Description
ST Notification of lapse