JPS5693063A - Sonar signal recorder - Google Patents

Sonar signal recorder

Info

Publication number
JPS5693063A
JPS5693063A JP16932079A JP16932079A JPS5693063A JP S5693063 A JPS5693063 A JP S5693063A JP 16932079 A JP16932079 A JP 16932079A JP 16932079 A JP16932079 A JP 16932079A JP S5693063 A JPS5693063 A JP S5693063A
Authority
JP
Japan
Prior art keywords
signal
sonar
regenerating
ppi
signals
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
JP16932079A
Other languages
Japanese (ja)
Inventor
Yoshihiro Iwata
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP16932079A priority Critical patent/JPS5693063A/en
Publication of JPS5693063A publication Critical patent/JPS5693063A/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
    • G01S7/56—Display arrangements
    • G01S7/62—Cathode-ray tube displays
    • G01S7/6218—Cathode-ray tube displays providing two-dimensional coordinated display of distance and direction
    • G01S7/6227—Plan-position indicators, i.e. P.P.I.

Landscapes

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

Abstract

PURPOSE:To record and regenerate continuous PPI signals accurately and enlarge training effect by FM-modulating and recording the sonar PPI signals. CONSTITUTION:By FM-modulation 2 of the PPI signal 8 from the sonar 1 on a vessel into a signal of wave form 16 approximately 4MHz, a video signal 10 is attained overlapped by synchronized VTR signal of wave form 17. And, synchronized sonar signal 9 is converted into voice signal 11 by a level converter 3. Signals 10 and 9 are recorded on separate tracks by VTR 4. At regeneration, regenerating video signal 12 and regenerating voice signal 13 are turned back into original sonar PPI signal 14 and synchronized sonar signal 15 by an FM demodulator 5 and a level converter 6. Then both signals are conveyed to the regenerating sonar, thus regenerating the recorded video image.
JP16932079A 1979-12-27 1979-12-27 Sonar signal recorder Pending JPS5693063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16932079A JPS5693063A (en) 1979-12-27 1979-12-27 Sonar signal recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16932079A JPS5693063A (en) 1979-12-27 1979-12-27 Sonar signal recorder

Publications (1)

Publication Number Publication Date
JPS5693063A true JPS5693063A (en) 1981-07-28

Family

ID=15884349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16932079A Pending JPS5693063A (en) 1979-12-27 1979-12-27 Sonar signal recorder

Country Status (1)

Country Link
JP (1) JPS5693063A (en)

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