JPS551567A - Directing direction control unit of receiving beam - Google Patents

Directing direction control unit of receiving beam

Info

Publication number
JPS551567A
JPS551567A JP7476478A JP7476478A JPS551567A JP S551567 A JPS551567 A JP S551567A JP 7476478 A JP7476478 A JP 7476478A JP 7476478 A JP7476478 A JP 7476478A JP S551567 A JPS551567 A JP S551567A
Authority
JP
Japan
Prior art keywords
phase
mixers
outputs
thru
sends
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.)
Pending
Application number
JP7476478A
Other languages
Japanese (ja)
Inventor
Kiyomi Minohara
Toyoki Sasakura
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.)
Furuno Electric Co Ltd
Original Assignee
Furuno Electric Co Ltd
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 Furuno Electric Co Ltd filed Critical Furuno Electric Co Ltd
Priority to JP7476478A priority Critical patent/JPS551567A/en
Publication of JPS551567A publication Critical patent/JPS551567A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To eliminate the need for any detector for detecting oscillation of ships by individually measuring the phase difference between the output signals of the specific receiving element and other receiving elements, phase-shifting the output of a local oscillator by as much as said phase differences then supplying the same to the mixers corresponding to the receiving elements. CONSTITUTION:Vibrators T1, T2... of an ultrasonic wave receiver 1 are disposed respectively isolatedly on a straight line L1. The outputs of the respective receivers are sent out to a phase comparator 5 and mixers 6 thru 8. The phase comparator 5 compares the phases between the outputs of the amplifiers 2 and 3 as well as 2 and 4 and sends the phase difference signals to a phase shifter 9. The phase shifter 9 sends the output signal of an oscillator 10 directly to a mixer 6 and sends the phase- shifted output signal of the oscillator 10 to the mixers 7 and 8. The mixers 6 thru 8 mix the outputs of the amplifiers 2 thru 4 and the output of the phase shifter 9 and supply these outputs commonly to a filter 11. The filter 11 selects only the specific frequency components and allows the same to pass therethrough.
JP7476478A 1978-06-19 1978-06-19 Directing direction control unit of receiving beam Pending JPS551567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7476478A JPS551567A (en) 1978-06-19 1978-06-19 Directing direction control unit of receiving beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7476478A JPS551567A (en) 1978-06-19 1978-06-19 Directing direction control unit of receiving beam

Publications (1)

Publication Number Publication Date
JPS551567A true JPS551567A (en) 1980-01-08

Family

ID=13556666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7476478A Pending JPS551567A (en) 1978-06-19 1978-06-19 Directing direction control unit of receiving beam

Country Status (1)

Country Link
JP (1) JPS551567A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4583547A (en) * 1983-06-01 1986-04-22 Bio-Stimu Trend Corp. Garment apparatus for delivering or receiving electric impulses
JPS62144406A (en) * 1985-12-19 1987-06-27 Yagi Antenna Co Ltd Antenna system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4583547A (en) * 1983-06-01 1986-04-22 Bio-Stimu Trend Corp. Garment apparatus for delivering or receiving electric impulses
JPS62144406A (en) * 1985-12-19 1987-06-27 Yagi Antenna Co Ltd Antenna system

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