JPS641993A - Echo sounder - Google Patents

Echo sounder

Info

Publication number
JPS641993A
JPS641993A JP15697887A JP15697887A JPS641993A JP S641993 A JPS641993 A JP S641993A JP 15697887 A JP15697887 A JP 15697887A JP 15697887 A JP15697887 A JP 15697887A JP S641993 A JPS641993 A JP S641993A
Authority
JP
Japan
Prior art keywords
waveform
correlation
time
signal
depth value
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
JP15697887A
Other languages
English (en)
Other versions
JPH011993A (ja
Inventor
Mikio Mitamura
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP15697887A priority Critical patent/JPS641993A/ja
Publication of JPH011993A publication Critical patent/JPH011993A/ja
Publication of JPS641993A publication Critical patent/JPS641993A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP15697887A 1987-06-23 1987-06-23 Echo sounder Pending JPS641993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15697887A JPS641993A (en) 1987-06-23 1987-06-23 Echo sounder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15697887A JPS641993A (en) 1987-06-23 1987-06-23 Echo sounder

Publications (2)

Publication Number Publication Date
JPH011993A JPH011993A (ja) 1989-01-06
JPS641993A true JPS641993A (en) 1989-01-06

Family

ID=15639490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15697887A Pending JPS641993A (en) 1987-06-23 1987-06-23 Echo sounder

Country Status (1)

Country Link
JP (1) JPS641993A (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944633A (en) * 1988-07-05 1990-07-31 Jos. Dyson & Sons, Inc. Boat support means
JPH03248082A (ja) * 1990-02-27 1991-11-06 Furuno Electric Co Ltd 海底反射波位置検出装置
JP2000304862A (ja) * 1999-04-06 2000-11-02 Leica Geosystems Ag 少なくとも１つの目標物の距離測定方法
WO2012124355A1 (ja) * 2011-03-11 2012-09-20 シャープ株式会社 空気調和機
JP2014174069A (ja) * 2013-03-12 2014-09-22 Mitsubishi Electric Corp レーザ測距装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944633A (en) * 1988-07-05 1990-07-31 Jos. Dyson & Sons, Inc. Boat support means
JPH03248082A (ja) * 1990-02-27 1991-11-06 Furuno Electric Co Ltd 海底反射波位置検出装置
JP2000304862A (ja) * 1999-04-06 2000-11-02 Leica Geosystems Ag 少なくとも１つの目標物の距離測定方法
WO2012124355A1 (ja) * 2011-03-11 2012-09-20 シャープ株式会社 空気調和機
JP2014174069A (ja) * 2013-03-12 2014-09-22 Mitsubishi Electric Corp レーザ測距装置

Similar Documents

Publication Publication Date Title
CA2409016A1 (en) Method and apparatus for detection of structural damage
JPS641993A (en) Echo sounder
JPS5353386A (en) Time difference detection circuit
AU7572300A (en) Correlation speed sensor
EP0334239A3 (en) Circuit for obtaining accurate timing information from received signal
GB2015127A (en) Improvements in or Relating to Target Apparatus
GB9807669D0 (en) Monopulse generator
JPS5544934A (en) Top dead point detector for engine
JPS5376797A (en) Receiver of fire alarm system
JPS5443012A (en) Amplitude envelope detector of signal waves
JPS6425026A (en) Detecting apparatus of leakage of water
JPS5544984A (en) Peak value calculating circuit
JPS56160672A (en) Sea bottom signal sensor of sea depth sounding device
JPS57187674A (en) Reflection finder
JPS57148274A (en) Underwater detecting device
JPS52129478A (en) Detective circuit for peakpoints of pulse signals
JPS5521668A (en) Tone detection system
JPS6443781A (en) Radar signal processor
JPS53136641A (en) Fault point locator by pulse radar system
JPH0442786Y2 (ja)
JPS561349A (en) Measuring method of propagation time of sound wave and finding position
JPS55164355A (en) Ae wave discriminating unit
JPS5517409A (en) Display system for scanning sonar
JPS57141567A (en) Fault point detecting system for submarine coaxial repeating system
JPS57124211A (en) Ultrasonic measuring device