FR935183A - Improvements in methods and apparatus for determining the position of mobiles - Google Patents

Improvements in methods and apparatus for determining the position of mobiles

Info

Publication number
FR935183A
FR935183A FR935183DA FR935183A FR 935183 A FR935183 A FR 935183A FR 935183D A FR935183D A FR 935183DA FR 935183 A FR935183 A FR 935183A
Authority
FR
France
Prior art keywords
mobiles
determining
methods
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
Other languages
French (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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger 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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Application granted granted Critical
Publication of FR935183A publication Critical patent/FR935183A/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
    • G01S1/24—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 pulses or equivalent modulations on carrier waves and the transit times being compared by measuring the difference in arrival time of a significant part of the modulations, e.g. LORAN systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR935183D 1946-10-03 1946-10-03 Improvements in methods and apparatus for determining the position of mobiles Expired FR935183A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR935183T 1946-10-03

Publications (1)

Publication Number Publication Date
FR935183A true FR935183A (en) 1948-06-11

Family

ID=9456570

Family Applications (1)

Application Number Title Priority Date Filing Date
FR935183D Expired FR935183A (en) 1946-10-03 1946-10-03 Improvements in methods and apparatus for determining the position of mobiles

Country Status (1)

Country Link
FR (1) FR935183A (en)

Similar Documents

Publication Publication Date Title
FR941438A (en) Improvements in distance measuring devices
FR935183A (en) Improvements in methods and apparatus for determining the position of mobiles
FR944299A (en) Improvements in methods and devices for pneumatic micrometry
FR57991E (en) Improvements in radio detection methods and devices for obstacles
FR924132A (en) Improvement in sound reproduction devices
FR930662A (en) Improvements to winches and similar apparatus
FR935355A (en) Method and apparatus for cinematography and stereoscopic projections
AU131936B2 (en) Improvements in eddy current apparatus
FR923305A (en) Improvement in concentration-evaporation devices
FR916492A (en) Advanced training in vibrators
FR946098A (en) Improvements in the methods of preparing diphenylacetonitriles
FR923704A (en) Improvements at t receiving stations. s. f. and similar devices
FR926021A (en) Apparatus for mounting and removing tires
ES174424A1 (en) TOPOGRAPHIC GEOMETRIC APPARATUS
ES176039A1 (en) AN EXTRACTOR DEVICE FOR TABLESTACAS AND PILOTS
FR927429A (en) Apparatus for the automatic volumetric measurement of cereals and the like
AU253046A (en) Improvements in eddy current apparatus
CA437415A (en) Measuring apparatus
ES173996A1 (en) AN ELECTROLARING APPARATUS
CA434946A (en) Felt conditioning method and apparatus
FR974013A (en) Improvements in steroscopic imaging methods and devices
AU127926B2 (en) Improvements in radiolocation apparatus
FR942697A (en) Metallurgical apparatus
AU131484B2 (en) Phonograph apparatus
CA433734A (en) Frictional apparatus