GB1298270A - Side looking sonar apparatus - Google Patents

Side looking sonar apparatus

Info

Publication number
GB1298270A
GB1298270A GB31828/70A GB3182870A GB1298270A GB 1298270 A GB1298270 A GB 1298270A GB 31828/70 A GB31828/70 A GB 31828/70A GB 3182870 A GB3182870 A GB 3182870A GB 1298270 A GB1298270 A GB 1298270A
Authority
GB
United Kingdom
Prior art keywords
elements
array
sea
july
focus
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
Application number
GB31828/70A
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.)
CBS Corp
Original Assignee
Westinghouse Electric 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1298270A publication Critical patent/GB1298270A/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8902—Side-looking sonar
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
    • 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
    • G10K11/32—Sound-focusing or directing, e.g. scanning characterised by the shape of the source

Landscapes

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

Abstract

1298270 Sonar; electro-acoustic transducers WESTINGHOUSE ELECTRIC CORP 1 July 1970 [9 July 1969] 31828/70 Headings H4D and H4J] A side looking sonar apparatus includes an elongated transducer means whose active surface is wider at one end thereof than in the centre. An array comprises narrow transducer elements 68 and wider elements 67 mounted on the arc of a circle whose radius equals the height of the array above the sea-bed. The elements are arranged such that their axes intersect at the maximum range on the line of focus F. The width of the elements 67 is such that they contribute substantially nothing to the energy received by the sea-bed at short ranges (around point n), thus simulating a short array giving high depth of focus. At long ranges (around point m) all the transducers are effective, thus providing a long array giving good resolution. The array may also be formed on a straight line (Fig. 16, not shown). The elements may be either piezoelectric or ceramic (e.g. barium titanate) or magneto-strictive. The received pulses are passed through a time varying gain amplifier to a magnetic tape, cathode ray tube or pen recorder. Fig. 2 not shown)).
GB31828/70A 1969-07-09 1970-07-01 Side looking sonar apparatus Expired GB1298270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84016369A 1969-07-09 1969-07-09

Publications (1)

Publication Number Publication Date
GB1298270A true GB1298270A (en) 1972-11-29

Family

ID=25281608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31828/70A Expired GB1298270A (en) 1969-07-09 1970-07-01 Side looking sonar apparatus

Country Status (3)

Country Link
US (1) US3585579A (en)
FR (1) FR2051645B1 (en)
GB (1) GB1298270A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190561A (en) * 1986-05-12 1987-11-18 Plessey Co Plc Acoustic transducer

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742436A (en) * 1971-03-24 1973-06-26 Westinghouse Electric Corp Side looking sonar apparatus
US3740707A (en) * 1971-06-15 1973-06-19 Us Navy Far field signal simulation utilizing cylindrical arrays
FR2241078B1 (en) * 1973-08-16 1977-08-12 France Etat
US3950723A (en) * 1974-02-21 1976-04-13 Westinghouse Electric Corporation Sonar apparatus
US3967234A (en) * 1974-03-06 1976-06-29 Westinghouse Electric Corporation Depth-of-field arc-transducer and sonar system
US4198702A (en) * 1978-04-14 1980-04-15 E G and G, Inc. Time varying gain amplifier for side scan sonar applications
US4460987A (en) * 1982-04-22 1984-07-17 The United States Of America As Represented By The Secretary Of The Navy Variable focus sonar with curved array
DE3221013A1 (en) * 1982-06-04 1983-12-08 Fried. Krupp Gmbh, 4300 Essen METHOD FOR UNDERWATER LOCATION WITH SOUND IMPULSES, IN PARTICULAR FOR DETECTION AND / OR CLASSIFICATION ON OR CLOSE TO THE BASE OF WATER, AND DEVICE FOR IMPLEMENTING THE METHOD
US4802148A (en) * 1982-11-08 1989-01-31 Westinghouse Electric Corp. Side-looking sonar apparatus
FR2550345B1 (en) * 1983-08-01 1985-10-11 Commissariat Energie Atomique MULTI-TRANSDUCER ULTRASONIC PROBE WITH DIFFERENT SIZE TRANSDUCERS
US4912685A (en) * 1988-11-30 1990-03-27 Westinghouse Electric Corp. Side looking sonar apparatus
GB0328877D0 (en) * 2003-12-12 2004-01-14 Geoacoustics Ltd Sonar apparatus and method
US7652952B2 (en) * 2004-08-02 2010-01-26 Johnson Outdoors Inc. Sonar imaging system for mounting to watercraft
US8300499B2 (en) 2009-07-14 2012-10-30 Navico, Inc. Linear and circular downscan imaging sonar
US8305840B2 (en) 2009-07-14 2012-11-06 Navico, Inc. Downscan imaging sonar
US9142206B2 (en) 2011-07-14 2015-09-22 Navico Holding As System for interchangeable mounting options for a sonar transducer
US9182486B2 (en) 2011-12-07 2015-11-10 Navico Holding As Sonar rendering systems and associated methods
GB201200274D0 (en) * 2012-01-09 2012-02-22 Airbus Operations Ltd Tool and method for manipulating a transducer assembly
US9268020B2 (en) * 2012-02-10 2016-02-23 Navico Holding As Sonar assembly for reduced interference
US9354312B2 (en) 2012-07-06 2016-05-31 Navico Holding As Sonar system using frequency bursts
US10151829B2 (en) 2016-02-23 2018-12-11 Navico Holding As Systems and associated methods for producing sonar image overlay
US11367425B2 (en) 2017-09-21 2022-06-21 Navico Holding As Sonar transducer with multiple mounting options

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359537A (en) * 1964-06-30 1967-12-19 Westinghouse Electric Corp Transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190561A (en) * 1986-05-12 1987-11-18 Plessey Co Plc Acoustic transducer
GB2190561B (en) * 1986-05-12 1989-12-20 Plessey Co Plc Acoustic transducer

Also Published As

Publication number Publication date
FR2051645B1 (en) 1974-10-31
US3585579A (en) 1971-06-15
FR2051645A1 (en) 1971-04-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee