FR2452115A1 - Yaw-compensated correlating sonar tracking system - has hydrophone arrays and, signal delay and signal combining circuits to produce pairs of overlapping directional beams - Google Patents

Yaw-compensated correlating sonar tracking system - has hydrophone arrays and, signal delay and signal combining circuits to produce pairs of overlapping directional beams

Info

Publication number
FR2452115A1
FR2452115A1 FR7907417A FR7907417A FR2452115A1 FR 2452115 A1 FR2452115 A1 FR 2452115A1 FR 7907417 A FR7907417 A FR 7907417A FR 7907417 A FR7907417 A FR 7907417A FR 2452115 A1 FR2452115 A1 FR 2452115A1
Authority
FR
France
Prior art keywords
arrays
beams
signal
phased
yaw
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
FR7907417A
Other languages
French (fr)
Other versions
FR2452115B1 (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.)
Sperry Corp
Original Assignee
Sperry Corp
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 Sperry Corp filed Critical Sperry Corp
Priority to FR7907417A priority Critical patent/FR2452115B1/en
Publication of FR2452115A1 publication Critical patent/FR2452115A1/en
Application granted granted Critical
Publication of FR2452115B1 publication Critical patent/FR2452115B1/en
Expired 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
    • G01S3/86—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
    • 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
    • G01S3/808—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/8083—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems determining direction of source

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (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 system comprises a pair of phased hydrophone arrays located a fixed distance apart along the keel of a ship. The transducer elements of each array are phased and combined to produce pairs of overlapping beams, each beam pair being oriented along a respective azimuth relative to the line joining the two arrays. The signals received by a selected pair of beams of the phased arrays are quantised and sampled before being cross-correlated to determine the precise bearing of the signal source (target) within the directive beams of the arrays. A compensating delay is inserted in the signal data derived from the array having the shorter propagational path to the underwater sound source. The inserted delay is such that signals from the target on the crossover axis of the beams would be brought into time coincidence at the inputs to the signal correlator.
FR7907417A 1979-03-23 1979-03-23 ULTRASONIC RADAR DETECTION ASSEMBLY Expired FR2452115B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7907417A FR2452115B1 (en) 1979-03-23 1979-03-23 ULTRASONIC RADAR DETECTION ASSEMBLY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7907417A FR2452115B1 (en) 1979-03-23 1979-03-23 ULTRASONIC RADAR DETECTION ASSEMBLY

Publications (2)

Publication Number Publication Date
FR2452115A1 true FR2452115A1 (en) 1980-10-17
FR2452115B1 FR2452115B1 (en) 1985-10-18

Family

ID=9223508

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7907417A Expired FR2452115B1 (en) 1979-03-23 1979-03-23 ULTRASONIC RADAR DETECTION ASSEMBLY

Country Status (1)

Country Link
FR (1) FR2452115B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663489A1 (en) * 1990-06-15 1991-12-20 Thomson Csf METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1441985A1 (en) * 1961-01-25 1969-12-11 Krupp Gmbh Device for the direction finding of underwater noise sources
US3731264A (en) * 1972-01-24 1973-05-01 Us Navy Apparatus for determining the position of a surface vessel with respect to a signal source
US3852706A (en) * 1955-06-10 1974-12-03 Bell Telephone Labor Inc Object location system
US3878381A (en) * 1966-12-07 1975-04-15 Us Navy Correlation circuit including vernier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852706A (en) * 1955-06-10 1974-12-03 Bell Telephone Labor Inc Object location system
DE1441985A1 (en) * 1961-01-25 1969-12-11 Krupp Gmbh Device for the direction finding of underwater noise sources
US3878381A (en) * 1966-12-07 1975-04-15 Us Navy Correlation circuit including vernier
US3731264A (en) * 1972-01-24 1973-05-01 Us Navy Apparatus for determining the position of a surface vessel with respect to a signal source

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663489A1 (en) * 1990-06-15 1991-12-20 Thomson Csf METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS.
WO1991019996A1 (en) * 1990-06-15 1991-12-26 Thomson-Csf Low-frequency signal acoustic detection method

Also Published As

Publication number Publication date
FR2452115B1 (en) 1985-10-18

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CD Change of name or company name
ST Notification of lapse