GB1303623A - - Google Patents

Info

Publication number
GB1303623A
GB1303623A GB5124866A GB5124866A GB1303623A GB 1303623 A GB1303623 A GB 1303623A GB 5124866 A GB5124866 A GB 5124866A GB 5124866 A GB5124866 A GB 5124866A GB 1303623 A GB1303623 A GB 1303623A
Authority
GB
United Kingdom
Prior art keywords
transducer
transducers
frequency
flops
flip
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
GB5124866A
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 filed Critical
Publication of GB1303623A publication Critical patent/GB1303623A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
    • 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
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
    • G01S15/8915—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array
    • G01S15/8918—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array the array being linear
    • 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)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

1303623 Sonar systems CONTROL DATA CORP 15 Nov 1966 [15 Nov 1965] 51248/66 Heading H4D In an acoustic radiator system, a linear alloy of sonic transducers 10a, 10b ... 10n produce a sound beam which is caused to scan periodically by frequency control. Delay devices which consist of binary dividing circuits 12a, 12b, ... 12n are coupled to the transducers through flip-flops 14a, 14b ... 14n. These delay devices are controlled in correspondence with the source frequency so that, as the latter is altered, the delays at each transducer are changed and the radiation distribution from the system is angularly moved. A reference pulse frequency, which is preselected, fixes the carrier frequency of each transducer while a clock frequency determines the time delay between the pulses of one transducer and the next i.e. the phase relationship of their respective carrier wave outputs. When installed in a ship, correction in yaw, pitch and roll may be effected by adjustment of the source frequency so as to move the beam correctively. In an embodiment in which 180 degree scanning is effected (Fig. 5), two dividing circuits are associated with each transducer. To prevent the formation of back-lobes in the transducer radiation pattern, further delay factors are incorporated. In another embodiment (Fig. 7, not shown), a switching circuit is incorporated so as to enable scanning between 90 and 180 degrees merely by reversal of the phase relationship required to scan between 0 and 90 degrees. The outputs from the transducers are in the form of square waves; filtering may occur in the transducer itself; or separate filters may be provided between the transducers and flip-flops.
GB5124866A 1965-11-15 1966-11-15 Expired GB1303623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50796365A 1965-11-15 1965-11-15

Publications (1)

Publication Number Publication Date
GB1303623A true GB1303623A (en) 1973-01-17

Family

ID=24020815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5124866A Expired GB1303623A (en) 1965-11-15 1966-11-15

Country Status (3)

Country Link
US (1) US3723955A (en)
CA (1) CA920264A (en)
GB (1) GB1303623A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES464592A1 (en) * 1976-12-01 1978-11-16 Raytheon Co Beam forming system
US4190818A (en) * 1977-08-25 1980-02-26 The United States Of America As Represented By The Secretary Of The Navy Digital beamsteering for a parametric scanning sonar system
US4208916A (en) * 1978-09-13 1980-06-24 Picker Corporation Electronic ultrasonic sector scanning apparatus and method
US4254417A (en) * 1979-08-20 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Beamformer for arrays with rotational symmetry
US6275679B1 (en) 1985-06-24 2001-08-14 The United States Of America As Represented By The Secretary Of The Air Force Secure communication using array transmitter
US10269340B2 (en) * 2012-06-15 2019-04-23 University Of Southern California Ultrasound beamformer with individual array element multiplexers
US20180011190A1 (en) * 2016-07-05 2018-01-11 Navico Holding As High Ping Rate Sonar
US11320534B2 (en) 2017-03-10 2022-05-03 Furuno Electric Company Limited Ultrasonic detecting device and ultrasonic detecting method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266010A (en) * 1963-10-25 1966-08-09 Gen Dynamics Corp Phase control system for use in producing a variable direction beam from a fixed transmitting array
US3281843A (en) * 1963-12-09 1966-10-25 Electronic Specialty Co Electronically scanned antenna
US3295098A (en) * 1964-11-23 1966-12-27 Gen Dynamics Corp Shift register phase control system for use in producing a variable direction beam from a fixed transmitting array

Also Published As

Publication number Publication date
CA920264A (en) 1973-01-30
US3723955A (en) 1973-03-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE Patent expired