JPS56115970A - Parametric active sonar - Google Patents

Parametric active sonar

Info

Publication number
JPS56115970A
JPS56115970A JP1855680A JP1855680A JPS56115970A JP S56115970 A JPS56115970 A JP S56115970A JP 1855680 A JP1855680 A JP 1855680A JP 1855680 A JP1855680 A JP 1855680A JP S56115970 A JPS56115970 A JP S56115970A
Authority
JP
Japan
Prior art keywords
sonar
receiver
sound
transmitter
medium
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
JP1855680A
Other languages
Japanese (ja)
Other versions
JPS6251434B2 (en
Inventor
Hiroshi Kamata
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP1855680A priority Critical patent/JPS56115970A/en
Publication of JPS56115970A publication Critical patent/JPS56115970A/en
Publication of JPS6251434B2 publication Critical patent/JPS6251434B2/ja
Granted 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
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves

Landscapes

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

Abstract

PURPOSE:To improve the SNR, resolving-power, directivity, detection distance and communication distance of a parametric active sonar by employing a sonar transmitter using a diced ceramic oscillator and a cylindrical sonar receiver having a reflecting body. CONSTITUTION:The signal having two frequency components from the oscillation/ modulation circuit 13 is amplified in the transmission unit 14 and radiated via the sonar transmitter 15 into the sound-field medium as a sound wave. The sound wave of the differential frequency component generated according to the nonlinearity of the sound-field medium is reflected by a foreign substance 16 in the medium and received by the sonar receiver 17. The signal processed in the reception unit 18 is displayed on the recording/display unit 19 as the position of the foreign substance 16, the intensity of the echo and the like. A diced ceramic oscillator is used in the sonar transmitter 15, and a cylindrical sonar receiver having a reflecting body is used as the sonar receiver 17.
JP1855680A 1980-02-19 1980-02-19 Parametric active sonar Granted JPS56115970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1855680A JPS56115970A (en) 1980-02-19 1980-02-19 Parametric active sonar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1855680A JPS56115970A (en) 1980-02-19 1980-02-19 Parametric active sonar

Publications (2)

Publication Number Publication Date
JPS56115970A true JPS56115970A (en) 1981-09-11
JPS6251434B2 JPS6251434B2 (en) 1987-10-29

Family

ID=11974892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1855680A Granted JPS56115970A (en) 1980-02-19 1980-02-19 Parametric active sonar

Country Status (1)

Country Link
JP (1) JPS56115970A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008020429A (en) * 2006-07-13 2008-01-31 Pohang Eng College Multiresonance ultrasonic transducer based on mems for super directivity ultrasonic distance measurement using parameteric transmitting array in air and its manufacturing method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5369074A (en) * 1976-11-30 1978-06-20 Int Nickel Co Geophysical detection

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5369074A (en) * 1976-11-30 1978-06-20 Int Nickel Co Geophysical detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008020429A (en) * 2006-07-13 2008-01-31 Pohang Eng College Multiresonance ultrasonic transducer based on mems for super directivity ultrasonic distance measurement using parameteric transmitting array in air and its manufacturing method
JP4594286B2 (en) * 2006-07-13 2010-12-08 學校法人浦項工科大學校 MEMS-based multi-resonant ultrasonic transducer and method of fabrication for super-directional ultrasonic distance measurement using parametric transmitting array in air

Also Published As

Publication number Publication date
JPS6251434B2 (en) 1987-10-29

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