FR2260803A1 - - Google Patents

Info

Publication number
FR2260803A1
FR2260803A1 FR7504299A FR7504299A FR2260803A1 FR 2260803 A1 FR2260803 A1 FR 2260803A1 FR 7504299 A FR7504299 A FR 7504299A FR 7504299 A FR7504299 A FR 7504299A FR 2260803 A1 FR2260803 A1 FR 2260803A1
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.)
Withdrawn
Application number
FR7504299A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2260803A1 publication Critical patent/FR2260803A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/18—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • 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
    • G01S1/38—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna
    • G01S1/40—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna the apparent movement of the antenna being produced by cyclic sequential energisation of fixed antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
FR7504299A 1974-02-12 1975-02-12 Withdrawn FR2260803A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6280/74A GB1489923A (en) 1974-02-12 1974-02-12 Frequency measuring arrangement

Publications (1)

Publication Number Publication Date
FR2260803A1 true FR2260803A1 (fr) 1975-09-05

Family

ID=9811632

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7504299A Withdrawn FR2260803A1 (fr) 1974-02-12 1975-02-12

Country Status (5)

Country Link
US (1) US3977002A (fr)
CA (1) CA1028763A (fr)
DE (1) DE2504614A1 (fr)
FR (1) FR2260803A1 (fr)
GB (1) GB1489923A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169487A2 (fr) * 1984-07-16 1986-01-29 Spartanics, Ltd. Montage pour la détermination et la synchronisation d'une fréquence

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4414504A (en) * 1980-11-05 1983-11-08 Motorola Inc. Fractional doppler counting
US4697188A (en) * 1985-02-13 1987-09-29 American Telephone And Telegraph Company, At&T Bell Laboratories Interference canceler with difference beam
DE3687559T2 (de) * 1985-04-13 1993-05-13 Anritsu Corp Vorrichtung und geraet zur signalmessung nach der frequenzueberlagerungsmethode mit mitteln zur automatischen korrektur der verstimmung.
US5457637A (en) * 1993-08-20 1995-10-10 Texas Instruments Inc. Flash waveform analyzer method and device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402885A (en) * 1972-08-03 1975-08-13 Standard Telephones Cables Ltd Doppler radio gui-ance systems
US3866227A (en) * 1973-03-15 1975-02-11 Rca Corp Doppler tracker receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169487A2 (fr) * 1984-07-16 1986-01-29 Spartanics, Ltd. Montage pour la détermination et la synchronisation d'une fréquence
EP0169487A3 (fr) * 1984-07-16 1988-12-21 Spartanics, Ltd. Montage pour la détermination et la synchronisation d'une fréquence

Also Published As

Publication number Publication date
GB1489923A (en) 1977-10-26
CA1028763A (fr) 1978-03-28
DE2504614A1 (de) 1975-08-14
US3977002A (en) 1976-08-24

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Legal Events

Date Code Title Description
ST Notification of lapse