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JPS5572880A - Processor for sonar video signal - Google Patents

Processor for sonar video signal

Info

Publication number
JPS5572880A
JPS5572880A JP14618778A JP14618778A JPS5572880A JP S5572880 A JPS5572880 A JP S5572880A JP 14618778 A JP14618778 A JP 14618778A JP 14618778 A JP14618778 A JP 14618778A JP S5572880 A JPS5572880 A JP S5572880A
Authority
JP
Japan
Prior art keywords
signals
peak value
detection output
output signal
stored
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
JP14618778A
Other languages
Japanese (ja)
Other versions
JPS6161072B2 (en
Inventor
Tokimori Kawamura
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
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP14618778A priority Critical patent/JPS5572880A/en
Publication of JPS5572880A publication Critical patent/JPS5572880A/en
Publication of JPS6161072B2 publication Critical patent/JPS6161072B2/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
    • 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
    • G01S7/523—Details of pulse systems
    • G01S7/526—Receivers
    • G01S7/527—Extracting wanted echo signals
    • G01S7/5276—Extracting wanted echo signals using analogue techniques

Landscapes

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

Abstract

PURPOSE:To make it possible to obtain a high-reliability screen by automatically setting a threshold level from the peak value of a detection output signal. CONSTITUTION:A detection output signal is stored 51 and from stored signals, their peak value is detected 52; and this peak value is used to set 33 threshold level TH a previously-set constant. Next, time (echo width) Tn when the detection output signal is smaller than level TH is detected 54 and decision 55 on whether this echo width is within the range of the transmission pulse width of a sonar unit, the minimum echo width set previously from desired length, and the maximum echo width is made. Then, when it is within the range, signals in Tn are left and other signals are considered to be reverberation or noises; and stored detection signals are erased 56 and signals within the ranges are sequentially outputted to a scanner circuit. In this way, the threshold level is automatically set from the peak value of current detection output signals, so that a high-reliability picture can be obtained.
JP14618778A 1978-11-27 1978-11-27 Processor for sonar video signal Granted JPS5572880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14618778A JPS5572880A (en) 1978-11-27 1978-11-27 Processor for sonar video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14618778A JPS5572880A (en) 1978-11-27 1978-11-27 Processor for sonar video signal

Publications (2)

Publication Number Publication Date
JPS5572880A true JPS5572880A (en) 1980-06-02
JPS6161072B2 JPS6161072B2 (en) 1986-12-24

Family

ID=15402094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14618778A Granted JPS5572880A (en) 1978-11-27 1978-11-27 Processor for sonar video signal

Country Status (1)

Country Link
JP (1) JPS5572880A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872074A (en) * 1981-10-26 1983-04-28 Japan Radio Co Ltd Display method for side lobe suppression
JPS59162468A (en) * 1983-03-08 1984-09-13 Tech Res & Dev Inst Of Japan Def Agency Subpole remover for passive sonar
JPS59218973A (en) * 1984-05-15 1984-12-10 Matsushita Electric Ind Co Ltd On-vehicle obstacle detector
JPS60179672A (en) * 1984-02-28 1985-09-13 Nec Corp Detection for target
WO2002048737A1 (en) * 2000-12-14 2002-06-20 Pepperl + Fuchs Gmbh Adaptive comparator circuit and acoustic distance sensor comprising said circuit
JP2007101490A (en) * 2005-10-07 2007-04-19 Seiko Precision Inc Movable body detector and movable body detection method
EP1067053B2 (en) † 1999-05-07 2009-03-11 Leuze electronic GmbH + Co. Device for detecting an object
US20120307594A1 (en) * 2010-05-19 2012-12-06 Satoru Inoue Obstacle detection device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872074A (en) * 1981-10-26 1983-04-28 Japan Radio Co Ltd Display method for side lobe suppression
JPH0375831B2 (en) * 1981-10-26 1991-12-03 Japan Radio Co Ltd
JPS59162468A (en) * 1983-03-08 1984-09-13 Tech Res & Dev Inst Of Japan Def Agency Subpole remover for passive sonar
JPH0513278B2 (en) * 1983-03-08 1993-02-22 Boeicho Gijutsu Kenkyu Honbucho
JPS60179672A (en) * 1984-02-28 1985-09-13 Nec Corp Detection for target
JPS59218973A (en) * 1984-05-15 1984-12-10 Matsushita Electric Ind Co Ltd On-vehicle obstacle detector
EP1067053B2 (en) † 1999-05-07 2009-03-11 Leuze electronic GmbH + Co. Device for detecting an object
US7327635B2 (en) 2000-12-14 2008-02-05 Pepperl + Fuchs Gmbh Adaptive comparator circuit and acoustic distance sensor comprising said circuit
WO2002048737A1 (en) * 2000-12-14 2002-06-20 Pepperl + Fuchs Gmbh Adaptive comparator circuit and acoustic distance sensor comprising said circuit
JP2007101490A (en) * 2005-10-07 2007-04-19 Seiko Precision Inc Movable body detector and movable body detection method
JP4703348B2 (en) * 2005-10-07 2011-06-15 セイコープレシジョン株式会社 Moving body detection apparatus and moving body detection method
US20120307594A1 (en) * 2010-05-19 2012-12-06 Satoru Inoue Obstacle detection device
US8797829B2 (en) * 2010-05-19 2014-08-05 Mitsubishi Electric Corporation Obstacle detection device

Also Published As

Publication number Publication date
JPS6161072B2 (en) 1986-12-24

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