FR2333256A1 - Reseaux d'antennes, notamment destines a l'inspection electromagnetique pour la recherche de defauts ou de derangements souterrains a des conduites et des cables - Google Patents

Reseaux d'antennes, notamment destines a l'inspection electromagnetique pour la recherche de defauts ou de derangements souterrains a des conduites et des cables

Info

Publication number
FR2333256A1
FR2333256A1 FR7536235A FR7536235A FR2333256A1 FR 2333256 A1 FR2333256 A1 FR 2333256A1 FR 7536235 A FR7536235 A FR 7536235A FR 7536235 A FR7536235 A FR 7536235A FR 2333256 A1 FR2333256 A1 FR 2333256A1
Authority
FR
France
Prior art keywords
aerials
fault location
aerial
frame
selectively connected
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
FR7536235A
Other languages
English (en)
Other versions
FR2333256B3 (fr
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.)
Radiodetection Ltd
Original Assignee
Electrolocation 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 Electrolocation Ltd filed Critical Electrolocation Ltd
Priority to FR7536235A priority Critical patent/FR2333256A1/fr
Priority to NL7514048A priority patent/NL7514048A/xx
Priority to DE19752554039 priority patent/DE2554039A1/de
Priority to BE162558A priority patent/BE836418A/fr
Publication of FR2333256A1 publication Critical patent/FR2333256A1/fr
Application granted granted Critical
Publication of FR2333256B3 publication Critical patent/FR2333256B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • 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
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/01—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the shape of the antenna or antenna system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Geophysics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
FR7536235A 1975-11-26 1975-11-26 Reseaux d'antennes, notamment destines a l'inspection electromagnetique pour la recherche de defauts ou de derangements souterrains a des conduites et des cables Granted FR2333256A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7536235A FR2333256A1 (fr) 1975-11-26 1975-11-26 Reseaux d'antennes, notamment destines a l'inspection electromagnetique pour la recherche de defauts ou de derangements souterrains a des conduites et des cables
NL7514048A NL7514048A (nl) 1975-11-26 1975-12-02 Antenne.
DE19752554039 DE2554039A1 (de) 1975-11-26 1975-12-02 Antennensystem
BE162558A BE836418A (fr) 1975-11-26 1975-12-09 Perfectionnement aux reseaux d'antennes

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7536235A FR2333256A1 (fr) 1975-11-26 1975-11-26 Reseaux d'antennes, notamment destines a l'inspection electromagnetique pour la recherche de defauts ou de derangements souterrains a des conduites et des cables
NL7514048A NL7514048A (nl) 1975-11-26 1975-12-02 Antenne.
DE19752554039 DE2554039A1 (de) 1975-11-26 1975-12-02 Antennensystem
BE162558A BE836418A (fr) 1975-11-26 1975-12-09 Perfectionnement aux reseaux d'antennes

Publications (2)

Publication Number Publication Date
FR2333256A1 true FR2333256A1 (fr) 1977-06-24
FR2333256B3 FR2333256B3 (fr) 1978-09-01

Family

ID=27424647

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7536235A Granted FR2333256A1 (fr) 1975-11-26 1975-11-26 Reseaux d'antennes, notamment destines a l'inspection electromagnetique pour la recherche de defauts ou de derangements souterrains a des conduites et des cables

Country Status (4)

Country Link
BE (1) BE836418A (fr)
DE (1) DE2554039A1 (fr)
FR (1) FR2333256A1 (fr)
NL (1) NL7514048A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113736A1 (fr) * 1982-07-09 1984-07-25 Laszlo Szedlmajer Procede et appareil permettant de determiner la trace et la profondeur de conducteurs metalliques souterrains.
EP0119708A2 (fr) * 1983-02-16 1984-09-26 Mark Ian Howell Epreuve électromagnétique des tubes et des câbles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3503990C2 (de) * 1985-02-06 1986-11-20 Eltro GmbH, Gesellschaft für Strahlungstechnik, 6900 Heidelberg Breitbandiges Richtantennensystem
DE19518420C2 (de) * 1995-05-19 1998-01-02 Diether Alfred Schroeder Schaltungsanordnung zur Verwendung in einem geophysikalischen Prospektionsverfahren

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113736A1 (fr) * 1982-07-09 1984-07-25 Laszlo Szedlmajer Procede et appareil permettant de determiner la trace et la profondeur de conducteurs metalliques souterrains.
EP0113736A4 (fr) * 1982-07-09 1985-10-14 Laszlo Szedlmajer Procede et appareil permettant de determiner la trace et la profondeur de conducteurs metalliques souterrains.
EP0119708A2 (fr) * 1983-02-16 1984-09-26 Mark Ian Howell Epreuve électromagnétique des tubes et des câbles
EP0119708A3 (en) * 1983-02-16 1984-12-05 Mark Ian Howell Electromagnetic surveying of pipes and cables
US4672321A (en) * 1983-02-16 1987-06-09 Howell Mark I Method and apparatus for electromagnetically surveying a remote elongate conductor employing a detector assembly having plural electromagnetic transducer assemblies

Also Published As

Publication number Publication date
DE2554039A1 (de) 1977-06-08
NL7514048A (nl) 1977-06-06
FR2333256B3 (fr) 1978-09-01
BE836418A (fr) 1976-04-01

Similar Documents

Publication Publication Date Title
JPS5335451A (en) Small size desk type calculator
FR2303393A1 (fr) Dispositif de raccordement electrique surminiaturise
GB1260902A (en) Electrical connectors
FR2333256A1 (fr) Reseaux d'antennes, notamment destines a l'inspection electromagnetique pour la recherche de defauts ou de derangements souterrains a des conduites et des cables
JPS5351985A (en) Semiconductor wiring constitution
JPS53142158A (en) Switch state detector
JPS5437519A (en) Diversity device
JPS5269512A (en) Reception equipment
JPS52138648A (en) Branch device for electrical equipment like switch
JPS52130516A (en) Monitor and fault position orientation system
JPS5363541A (en) Enclosed switch
JPS538749A (en) Gas insulating machine and apparatus
JPS5375841A (en) Antenna device
GB895541A (en) Method and apparatus for the measurement of crack propagation in test panels and the like
JPS5373002A (en) Test system of mobile conunication equipment
JPS52124803A (en) Signal send/receiving
JPS538009A (en) Monitor system for leakage coaxial cables
JPS5372515A (en) Dispersed feeding system
JPS5372514A (en) Fault detector of repeater
JPS533017A (en) Fault test system for terminal station reception part of time division multi-connection communication system
JPS51134550A (en) Antenna mast set-up device used for antenna installation
JPS5252546A (en) Isolator
JPS5270343A (en) Switching device
JPS51138306A (en) Control apparatus for communication line
JPS51121792A (en) Wiring construction