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FR948581A - Perfectionnements aux appareils récepteurs à fréquence radioélectrique - Google Patents

Perfectionnements aux appareils récepteurs à fréquence radioélectrique

Info

Publication number
FR948581A
FR948581A FR948581DA FR948581A FR 948581 A FR948581 A FR 948581A FR 948581D A FR948581D A FR 948581DA FR 948581 A FR948581 A FR 948581A
Authority
FR
France
Prior art keywords
radio frequency
receiving devices
frequency receiving
devices
radio
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
English (en)
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.)
Decca Record Co Ltd
Original Assignee
Decca Record Co 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
Priority claimed from GB2169045A external-priority patent/GB620481A/en
Application filed by Decca Record Co Ltd filed Critical Decca Record Co Ltd
Application granted granted Critical
Publication of FR948581A publication Critical patent/FR948581A/fr
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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measuring Phase Differences (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Navigation (AREA)
FR948581D 1945-08-24 1947-06-27 Perfectionnements aux appareils récepteurs à fréquence radioélectrique Expired FR948581A (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB2169045A GB620481A (en) 1945-08-24 1945-08-24 Improvements in or relating to radio frequency receiving apparatus
US612991A US2500200A (en) 1945-08-24 1945-08-27 Multiple channel radio-frequency receiver
US71425A US2562329A (en) 1945-08-24 1949-01-18 Double phase comparator circuit
US75681A US2548233A (en) 1945-08-24 1949-02-10 Radio receiving apparatus

Publications (1)

Publication Number Publication Date
FR948581A true FR948581A (fr) 1949-08-04

Family

ID=32234279

Family Applications (3)

Application Number Title Priority Date Filing Date
FR948582D Expired FR948582A (fr) 1945-08-24 1947-06-27 Perfectionnements aux récepteurs radioélectriques à voies multiples
FR948581D Expired FR948581A (fr) 1945-08-24 1947-06-27 Perfectionnements aux appareils récepteurs à fréquence radioélectrique
FR948583D Expired FR948583A (fr) 1945-08-24 1947-06-27 Perfectionnements aux discriminateurs de phases pour installations radioélectriques

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR948582D Expired FR948582A (fr) 1945-08-24 1947-06-27 Perfectionnements aux récepteurs radioélectriques à voies multiples

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR948583D Expired FR948583A (fr) 1945-08-24 1947-06-27 Perfectionnements aux discriminateurs de phases pour installations radioélectriques

Country Status (3)

Country Link
US (3) US2500200A (fr)
FR (3) FR948582A (fr)
GB (2) GB620508A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611127A (en) * 1947-10-28 1952-09-16 Sperry Corp Continuous wave navigation system
US2513318A (en) * 1948-08-05 1950-07-04 Seismograph Service Corp Radio position finding system
US2551211A (en) * 1949-06-21 1951-05-01 Seismograph Service Corp Radio position indicating system and apparatus
US2703380A (en) * 1949-09-21 1955-03-01 Sperry Corp Phase comparison apparatus for data transmission systems
US2794928A (en) * 1949-10-13 1957-06-04 Sperry Rand Corp Voltage comparison means
US2788489A (en) * 1952-06-10 1957-04-09 John M Hollywood Phase detecting system
US2974281A (en) * 1957-11-01 1961-03-07 Bell Telephone Labor Inc Selective signal recognition system
US3079586A (en) * 1957-12-27 1963-02-26 Gunn Ross Locating and guidance systems for vehicles for air, sea and land
SE327287B (fr) * 1967-02-20 1970-08-17 Kockums Mekaniska Verkstads Ab
US7842725B2 (en) 2008-07-24 2010-11-30 Ecolab USA, Inc. Foaming alcohol compositions with selected dimethicone surfactants
EP4176031A1 (fr) 2020-07-06 2023-05-10 Ecolab USA Inc. Compositions à base d'huile de ricin modifiée par peg pour la microémulsification et l'élimination de multiples salissures grasses

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE546000C (de) * 1930-05-20 1932-03-08 Meint Harms Dr Verfahren einer selbsttaetigen Ortsbestimmung beweglicher Empfaenger
US1957519A (en) * 1931-12-18 1934-05-08 Bell Telephone Labor Inc Multiple radio receiving system
BE423746A (fr) * 1936-09-24
US2144203A (en) * 1937-09-23 1939-01-17 John P Shanklin Method for direct indication of position in a given area
FR959092A (fr) * 1938-09-30 1950-03-23
US2281995A (en) * 1939-04-27 1942-05-05 Rca Corp Phase comparing system
US2318248A (en) * 1940-02-21 1943-05-04 Socony Vacuum Oil Co Inc Phase meter
US2408773A (en) * 1942-03-31 1946-10-08 Bell Telephone Labor Inc Position determining system
US2335265A (en) * 1942-07-22 1943-11-30 Scophony Corp Of America Phase discriminator
US2405073A (en) * 1943-10-28 1946-07-30 Gen Electric Phase comparator
US2467361A (en) * 1943-10-28 1949-04-12 Gen Electric Phase comparator

Also Published As

Publication number Publication date
US2562329A (en) 1951-07-31
GB620508A (en) 1949-03-25
FR948582A (fr) 1949-08-04
GB620507A (en) 1949-03-25
US2500200A (en) 1950-03-14
FR948583A (fr) 1949-08-04
US2548233A (en) 1951-04-10

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