FR1391919A - Improvements to radio-localization systems - Google Patents

Improvements to radio-localization systems

Info

Publication number
FR1391919A
FR1391919A FR961892A FR961892A FR1391919A FR 1391919 A FR1391919 A FR 1391919A FR 961892 A FR961892 A FR 961892A FR 961892 A FR961892 A FR 961892A FR 1391919 A FR1391919 A FR 1391919A
Authority
FR
France
Prior art keywords
radio
localization systems
localization
systems
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
FR961892A
Other languages
French (fr)
Inventor
Pierre Laurent
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.)
CGG SA
Original Assignee
Compagnie Generale de Geophysique SA
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 Compagnie Generale de Geophysique SA filed Critical Compagnie Generale de Geophysique SA
Priority to FR961892A priority Critical patent/FR1391919A/en
Priority to BE658817A priority patent/BE658817A/xx
Priority to NL6500986A priority patent/NL6500986A/xx
Application granted granted Critical
Publication of FR1391919A publication Critical patent/FR1391919A/en
Expired 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/08—Systems for determining direction or position line
    • G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
    • G01S1/30—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference
    • G01S1/304—Analogous systems in which a beat frequency, obtained by heterodyning the signals, is compared in phase with a reference signal obtained by heterodyning the signals in a fixed reference point and transmitted therefrom, e.g. LORAC (long range accuracy) or TORAN systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR961892A 1964-01-29 1964-01-29 Improvements to radio-localization systems Expired FR1391919A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR961892A FR1391919A (en) 1964-01-29 1964-01-29 Improvements to radio-localization systems
BE658817A BE658817A (en) 1964-01-29 1965-01-26
NL6500986A NL6500986A (en) 1964-01-29 1965-01-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR961892A FR1391919A (en) 1964-01-29 1964-01-29 Improvements to radio-localization systems

Publications (1)

Publication Number Publication Date
FR1391919A true FR1391919A (en) 1965-03-12

Family

ID=8821947

Family Applications (1)

Application Number Title Priority Date Filing Date
FR961892A Expired FR1391919A (en) 1964-01-29 1964-01-29 Improvements to radio-localization systems

Country Status (3)

Country Link
BE (1) BE658817A (en)
FR (1) FR1391919A (en)
NL (1) NL6500986A (en)

Also Published As

Publication number Publication date
NL6500986A (en) 1965-07-30
BE658817A (en) 1965-05-17

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