FR958988A - - Google Patents

Info

Publication number
FR958988A
FR958988A FR958988DA FR958988A FR 958988 A FR958988 A FR 958988A FR 958988D A FR958988D A FR 958988DA FR 958988 A FR958988 A FR 958988A
Authority
FR
France
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
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.)
Publication date
Application granted granted Critical
Publication of FR958988A publication Critical patent/FR958988A/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
    • G01S1/22—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 frequency modulations on carrier waves and the transit times being compared by measuring difference of instantaneous frequencies of received carrier waves
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR958988D 1939-10-19 Expired FR958988A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH655575X 1939-10-19

Publications (1)

Publication Number Publication Date
FR958988A true FR958988A (fr) 1950-03-22

Family

ID=4526476

Family Applications (1)

Application Number Title Priority Date Filing Date
FR958988D Expired FR958988A (fr) 1939-10-19

Country Status (4)

Country Link
US (1) US2413620A (fr)
CH (1) CH223334A (fr)
FR (1) FR958988A (fr)
GB (1) GB655575A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451823A (en) * 1940-05-12 1948-10-19 Radio Patents Corp Direction finding system
BE474193A (fr) * 1945-02-24
US2724831A (en) * 1946-04-19 1955-11-22 Wallace Marcel Navigational systems
US2585605A (en) * 1946-11-12 1952-02-12 Wallace Navigational system
US2513320A (en) * 1948-09-22 1950-07-04 Seismograph Service Corp Radio position determining system
US2628351A (en) * 1949-11-14 1953-02-10 Mackta Leo Low frequency simplified loran system
US2682049A (en) * 1949-12-14 1954-06-22 Raytheon Mfg Co Beat frequency navigation and guidance system
US2602925A (en) * 1950-04-20 1952-07-08 Rca Corp Radio navigation system
US2754512A (en) * 1951-06-26 1956-07-10 Davis Harry Fm long range navigation system
US2907028A (en) * 1953-02-20 1959-09-29 Robert J Stirton Apparatus for trajectory determination
US3153220A (en) * 1954-08-20 1964-10-13 Hagemann Julius Doppler log and plotter system
US2837738A (en) * 1955-08-10 1958-06-03 Fairchild Engine & Airplane Passive range measuring device
GB887622A (en) * 1959-05-12 1962-01-24 Nat Res Dev A frequency-modulation echo-sounder
US4369444A (en) * 1980-11-10 1983-01-18 Grumman Aerospace Corporation Multipath Doppler shift vertical speed measurement system

Also Published As

Publication number Publication date
GB655575A (en) 1951-07-25
US2413620A (en) 1946-12-31
CH223334A (de) 1942-09-15

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