GB1548656A - Method and apparatus for the determination of start time difference and overall phase shift between two signals - Google Patents

Method and apparatus for the determination of start time difference and overall phase shift between two signals

Info

Publication number
GB1548656A
GB1548656A GB1323176A GB1323176A GB1548656A GB 1548656 A GB1548656 A GB 1548656A GB 1323176 A GB1323176 A GB 1323176A GB 1323176 A GB1323176 A GB 1323176A GB 1548656 A GB1548656 A GB 1548656A
Authority
GB
United Kingdom
Prior art keywords
phi
circuit
determining
phase shift
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.)
Expired
Application number
GB1323176A
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.)
Wintershall Dea Deutschland AG
Original Assignee
Deutsche Texaco AG
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 Deutsche Texaco AG filed Critical Deutsche Texaco AG
Publication of GB1548656A publication Critical patent/GB1548656A/en
Expired 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
    • G01V1/02—Generating seismic energy
    • G01V1/04—Details

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)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

The time displacement tau and total phase difference phi 0 between two sliding-frequency signals, needed for checking vibrators in the seismic exploration method, are obtained in that for a number of frequencies f contained in these signals, a value phi (f) specifying the phase relationship, for example the arctan of the quotient of the real part and the imaginary part of the product of the Fourier transform of one signal and the conjugate-complex of the Fourier transform of the other signal, are determined and a straight line g(f) = Af + B, which deviates least from phi (f), is established. The slope of the straight line A provides the time displacement tau = A/2 pi and the ordinate section B provides the total phase difference phi 0 IDENTICAL B modulo 2 pi . The relevant device contains, in addition to the signal generator (1), phase shifter network (2), controller (3), vibrator (4), comparison circuit (5) and vibrator baseplate (8) with receiver (6) and test accelerometer (7), also an analog/digital converter and multiplex device (15), a Fourier transformation unit (16), an arithmetic circuit (17) for determining phi (f) and a circuit (18) for determining A and B with indicating device (20). A circuit (24) with analog display (22) is used for determining the residual phase shift and a circuit (26) is used for determining a statistic measure for the residual phase shift. <IMAGE>
GB1323176A 1975-09-27 1976-04-01 Method and apparatus for the determination of start time difference and overall phase shift between two signals Expired GB1548656A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752543294 DE2543294C3 (en) 1975-09-27 1975-09-27 Method and device for checking the synchronism of several vibrators

Publications (1)

Publication Number Publication Date
GB1548656A true GB1548656A (en) 1979-07-18

Family

ID=5957687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1323176A Expired GB1548656A (en) 1975-09-27 1976-04-01 Method and apparatus for the determination of start time difference and overall phase shift between two signals

Country Status (9)

Country Link
JP (1) JPS5242166A (en)
AR (1) AR221815A1 (en)
CA (1) CA1051099A (en)
CH (1) CH621198A5 (en)
DE (1) DE2543294C3 (en)
FR (1) FR2325940A1 (en)
GB (1) GB1548656A (en)
IT (1) IT1058701B (en)
NL (1) NL7603232A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114070433A (en) * 2021-12-09 2022-02-18 中国电子科技集团公司第三十八研究所 Multi-channel transceiving component phase-shifting conversion time testing system and method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029169C2 (en) * 1980-08-01 1982-06-09 Standard Elektrik Lorenz Ag, 7000 Stuttgart Transmission device for a navigation system
JPS62278143A (en) * 1986-05-26 1987-12-03 Hoya Corp Glass for ultrasonic delay line
DE19841154C2 (en) * 1998-09-09 2002-11-07 Holger Loehmer Method and device for measuring the transit time of sound waves
CN106198079B (en) * 2016-07-13 2019-03-26 广东工业大学 A kind of rotary machinery fault diagnosis method based on margin index

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875394A (en) * 1973-04-20 1975-04-01 Willis H Acting Admini Shapely Correlation type phase detector
US3863202A (en) * 1973-10-23 1975-01-28 Amoco Prod Co Earth vibrator tester
GB1500958A (en) * 1974-04-24 1978-02-15 Standard Oil Co Automatic computer-performed methods for analysing the operation of an earth vibrator used in geophysical prospecting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114070433A (en) * 2021-12-09 2022-02-18 中国电子科技集团公司第三十八研究所 Multi-channel transceiving component phase-shifting conversion time testing system and method
CN114070433B (en) * 2021-12-09 2023-05-09 中国电子科技集团公司第三十八研究所 System and method for testing phase shift conversion time of multichannel transceiver component

Also Published As

Publication number Publication date
JPS5242166A (en) 1977-04-01
IT1058701B (en) 1982-05-10
FR2325940B1 (en) 1982-10-08
DE2543294C3 (en) 1981-11-12
CA1051099A (en) 1979-03-20
AR221815A1 (en) 1981-03-31
DE2543294B2 (en) 1981-04-09
FR2325940A1 (en) 1977-04-22
NL7603232A (en) 1977-03-29
CH621198A5 (en) 1981-01-15
DE2543294A1 (en) 1977-04-07

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee