JPS57163881A - Sonar - Google Patents

Sonar

Info

Publication number
JPS57163881A
JPS57163881A JP4993681A JP4993681A JPS57163881A JP S57163881 A JPS57163881 A JP S57163881A JP 4993681 A JP4993681 A JP 4993681A JP 4993681 A JP4993681 A JP 4993681A JP S57163881 A JPS57163881 A JP S57163881A
Authority
JP
Japan
Prior art keywords
medium
internal noise
dome
sonar
signal detector
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
JP4993681A
Other languages
Japanese (ja)
Inventor
Takashige Koga
Kenichi Uchijima
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP4993681A priority Critical patent/JPS57163881A/en
Publication of JPS57163881A publication Critical patent/JPS57163881A/en
Pending 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
    • 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
    • G01S7/521—Constructional features
    • 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
    • G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
    • G10K11/006—Transducer mounting in underwater equipment, e.g. sonobuoys

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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE:To prevent evil influence of internal noise of a sonar by making the acoustic velocity of a medium in the dome of the sonar, having a sound insulating plate for internal noise behind a signal detector faster than that of sea water. CONSTITUTION:In a dome 1, a signal detector 2 is installed and a medium 6 is charged; and a sound insulating plate 4 for internal noise is fitted behind the signal detector 2. The medium 6 has a higher acoustic velocity than sea water as a medium 7 outside the dome 1. For this purpose, there are three kinds of method-using a medium having a higher acoustic medium, increasing the pressure of the medium, and raising the temperature of the medium. Consequently, the angle of refraction of the internal noise is increased and total reflection on the boundary surface of the medium is realized; and the quantity of a refracted and a diffracted wave entering the dome is reduced to reduce the influence of internal noise of a sonar.
JP4993681A 1981-04-02 1981-04-02 Sonar Pending JPS57163881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4993681A JPS57163881A (en) 1981-04-02 1981-04-02 Sonar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4993681A JPS57163881A (en) 1981-04-02 1981-04-02 Sonar

Publications (1)

Publication Number Publication Date
JPS57163881A true JPS57163881A (en) 1982-10-08

Family

ID=12844903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4993681A Pending JPS57163881A (en) 1981-04-02 1981-04-02 Sonar

Country Status (1)

Country Link
JP (1) JPS57163881A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62217173A (en) * 1986-03-19 1987-09-24 Tech Res & Dev Inst Of Japan Def Agency Underwater receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62217173A (en) * 1986-03-19 1987-09-24 Tech Res & Dev Inst Of Japan Def Agency Underwater receiver

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