NO984762L - Procedure for the automatic analysis of frequency pass band for registered signals - Google Patents

Procedure for the automatic analysis of frequency pass band for registered signals

Info

Publication number
NO984762L
NO984762L NO984762A NO984762A NO984762L NO 984762 L NO984762 L NO 984762L NO 984762 A NO984762 A NO 984762A NO 984762 A NO984762 A NO 984762A NO 984762 L NO984762 L NO 984762L
Authority
NO
Norway
Prior art keywords
pass band
automatic analysis
procedure
spectrum
signals
Prior art date
Application number
NO984762A
Other languages
Norwegian (no)
Other versions
NO984762D0 (en
Inventor
Eric De Bazelaire
Didier Rappin
Original Assignee
Elf Exploration Prod
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 Elf Exploration Prod filed Critical Elf Exploration Prod
Publication of NO984762D0 publication Critical patent/NO984762D0/en
Publication of NO984762L publication Critical patent/NO984762L/en

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
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis

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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Oppfinnelsen vedrører en fremgangsmåte for den automatiske analyse av frekvenspassbånd for registrerte signaler, kjennetegnet ved at den består av: a) å anvende en Fourier-transformasjon på minst et av signalene som oppnåes i et amplitudespektrum av nevnte signal, b) å frembringe et middelspektrum av nevnte amplitudespektrum, c) å analysere nevnte middelspektrum for derved å frembringe en spektralkomponent som representater nevnte signal, og d) å bestemme, på basis av den representative spektralkomponent, minimums (Fmin) og maksimums (Fmaks) frekvensverdiene for hvilke amplituden av nevnte spektralkomponent er lik halvparten (Amaks/2) av den maksimumsamplituden (Amaks). Oppfinnelsen er særlig nyttig for å bestemme seismiske signalers passbånd.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a method for the automatic analysis of frequency band for recorded signals, characterized in that it comprises: a) applying a Fourier transform to at least one of the signals obtained in an amplitude spectrum of said signal; c) analyzing said mean spectrum, thereby producing a spectral component representing said signal, and d) determining, on the basis of the representative spectral component, the minimum (Fmin) and maximum (Fmax) frequency values for which the amplitude of said spectrum is equal to half (Amax / 2) of the maximum amplitude (Amax). The invention is particularly useful for determining the pass band of seismic signals.

NO984762A 1997-02-13 1998-10-12 Procedure for the automatic analysis of frequency pass band for registered signals NO984762L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9701686A FR2759459B1 (en) 1997-02-13 1997-02-13 METHOD OF AUTOMATIC FREQUENTIAL BANDWIDTH ANALYSIS OF RECORDED SIGNALS
PCT/FR1998/000246 WO1998036293A1 (en) 1997-02-13 1998-02-09 Method for the automatic analysis of frequency passband of recorded signals

Publications (2)

Publication Number Publication Date
NO984762D0 NO984762D0 (en) 1998-10-12
NO984762L true NO984762L (en) 1998-12-14

Family

ID=9503674

Family Applications (1)

Application Number Title Priority Date Filing Date
NO984762A NO984762L (en) 1997-02-13 1998-10-12 Procedure for the automatic analysis of frequency pass band for registered signals

Country Status (5)

Country Link
EP (1) EP0894273A1 (en)
CA (1) CA2250355A1 (en)
FR (1) FR2759459B1 (en)
NO (1) NO984762L (en)
WO (1) WO1998036293A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110728A (en) * 1976-09-24 1978-08-29 Texaco Inc. Seismic data processing apparatus for obtaining alpha values from seismic data
JPS58184542A (en) * 1982-04-22 1983-10-28 Toshiba Corp System for detecting acoustic abnormality
JPS6040972A (en) * 1983-08-16 1985-03-04 Hitachi Ltd Nuclear magnetic resonance apparatus
DE3785025T2 (en) * 1986-10-30 1993-10-21 Nippon Telegraph & Telephone METHOD FOR DETECTING AN OBJECT AND DEVICE THEREFOR.
JPH077066B2 (en) * 1987-07-06 1995-01-30 日本電信電話株式会社 Method and apparatus for detecting formation interface and buried object
KR0168063B1 (en) * 1992-06-10 1999-05-01 강진구 Preprocessor for detecting outline

Also Published As

Publication number Publication date
NO984762D0 (en) 1998-10-12
EP0894273A1 (en) 1999-02-03
CA2250355A1 (en) 1998-08-20
FR2759459B1 (en) 1999-03-26
WO1998036293A1 (en) 1998-08-20
FR2759459A1 (en) 1998-08-14

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