JPS5589771A - Underwater search and recorder - Google Patents

Underwater search and recorder

Info

Publication number
JPS5589771A
JPS5589771A JP6182778A JP6182778A JPS5589771A JP S5589771 A JPS5589771 A JP S5589771A JP 6182778 A JP6182778 A JP 6182778A JP 6182778 A JP6182778 A JP 6182778A JP S5589771 A JPS5589771 A JP S5589771A
Authority
JP
Japan
Prior art keywords
fed
waveform
recorder
waves
circuit
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
JP6182778A
Other languages
Japanese (ja)
Inventor
Tokiaki Yamamoto
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 JP6182778A priority Critical patent/JPS5589771A/en
Publication of JPS5589771A publication Critical patent/JPS5589771A/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
    • 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

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)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To increase the resolution of reflected body, by separating and recording the reflected waves closed without being duplicated, through the envelope detection of received reflection waves and the differentiation. CONSTITUTION:The transmitter 1 transmits the ultrasonic pulses into water from the transceiver 3 via the selector circuit 2 in a given period. The reflection waves from water are fed to the half wave rectifying circuit 5 via the amplifier 4 as the signal a, and the envelope waveform b of the output is fed to the differentiation circuit 6. Further, the waveform c differentiated is fed to the rectifying circuit 7, only the negative polarity component of the waveform c is inverted into the positive polarity voltage and fed to the recorder 9 as the pulses Pr1' and Pr2' of the waveform d. As a result, the recorded images W1 and W2 corresponding to the reflected waves Pr1, Pr2 are recorded on the recording paper 8 with separation.
JP6182778A 1978-05-23 1978-05-23 Underwater search and recorder Pending JPS5589771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6182778A JPS5589771A (en) 1978-05-23 1978-05-23 Underwater search and recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6182778A JPS5589771A (en) 1978-05-23 1978-05-23 Underwater search and recorder

Publications (1)

Publication Number Publication Date
JPS5589771A true JPS5589771A (en) 1980-07-07

Family

ID=13182306

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6182778A Pending JPS5589771A (en) 1978-05-23 1978-05-23 Underwater search and recorder

Country Status (1)

Country Link
JP (1) JPS5589771A (en)

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