JPS562743A - Processing system of receiving signal - Google Patents

Processing system of receiving signal

Info

Publication number
JPS562743A
JPS562743A JP7811679A JP7811679A JPS562743A JP S562743 A JPS562743 A JP S562743A JP 7811679 A JP7811679 A JP 7811679A JP 7811679 A JP7811679 A JP 7811679A JP S562743 A JPS562743 A JP S562743A
Authority
JP
Japan
Prior art keywords
signal
receiving signal
output
transmission
dependent
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
JP7811679A
Other languages
Japanese (ja)
Inventor
Masaji Ueno
Masahiko Tsunoda
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.)
Kaijo Denki Co Ltd
Marine Instr Co Ltd
Original Assignee
Kaijo Denki Co Ltd
Marine Instr 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 Kaijo Denki Co Ltd, Marine Instr Co Ltd filed Critical Kaijo Denki Co Ltd
Priority to JP7811679A priority Critical patent/JPS562743A/en
Publication of JPS562743A publication Critical patent/JPS562743A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
    • G01V1/364—Seismic filtering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/20—Trace signal pre-filtering to select, remove or transform specific events or signal components, i.e. trace-in/trace-out
    • G01V2210/21—Frequency-domain filtering, e.g. band pass

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To obtain a selection effect similar to use of a narrow band filter practically, by detecting phases of the frequency of the amplifier output and the oscillation frequency used for transmission after amplifying the receiving signal to control the receiving signal of the amplifier. CONSTITUTION:When the reflection wave from fish and so on comes to amplifier 5 from transmitter and receiver 3 through transmission/receiving switch 4, induction P dependent upon oscillation, receiving signal F dependent upon fish, and disturbing noise N dependent upon other-ship transmission waves are included in output (c). The output is subjected to phase detection in phase detector 7 by the transmission signal of frequency f0 of oscillator 1 and is subjected to waveform shaping in 8 to output signal (f). This signal is sent to gate circuit 8' to control receiving signal (c), and required signal (g) is obtained from circuit 8'. As a result, the selection effect similar to use of a narrow band filter can be obtained practically without the narrow band filter.
JP7811679A 1979-06-22 1979-06-22 Processing system of receiving signal Pending JPS562743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7811679A JPS562743A (en) 1979-06-22 1979-06-22 Processing system of receiving signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7811679A JPS562743A (en) 1979-06-22 1979-06-22 Processing system of receiving signal

Publications (1)

Publication Number Publication Date
JPS562743A true JPS562743A (en) 1981-01-13

Family

ID=13652905

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7811679A Pending JPS562743A (en) 1979-06-22 1979-06-22 Processing system of receiving signal

Country Status (1)

Country Link
JP (1) JPS562743A (en)

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