FR2261538A1 - Phase modulated aircraft navigation system - aircraft receives signals from radio beacons, along flight path - Google Patents

Phase modulated aircraft navigation system - aircraft receives signals from radio beacons, along flight path

Info

Publication number
FR2261538A1
FR2261538A1 FR7405812A FR7405812A FR2261538A1 FR 2261538 A1 FR2261538 A1 FR 2261538A1 FR 7405812 A FR7405812 A FR 7405812A FR 7405812 A FR7405812 A FR 7405812A FR 2261538 A1 FR2261538 A1 FR 2261538A1
Authority
FR
France
Prior art keywords
aircraft
flight path
navigation system
receives signals
phase modulated
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.)
Granted
Application number
FR7405812A
Other languages
French (fr)
Other versions
FR2261538B1 (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.)
Office National dEtudes et de Recherches Aerospatiales ONERA
Original Assignee
Office National dEtudes et de Recherches Aerospatiales ONERA
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 Office National dEtudes et de Recherches Aerospatiales ONERA filed Critical Office National dEtudes et de Recherches Aerospatiales ONERA
Priority to FR7405812A priority Critical patent/FR2261538A1/en
Priority to DE2507401A priority patent/DE2507401C3/en
Priority to CA220,364A priority patent/CA1026465A/en
Priority to US05/550,481 priority patent/US4019184A/en
Priority to GB7031/75A priority patent/GB1503211A/en
Publication of FR2261538A1 publication Critical patent/FR2261538A1/en
Priority to SU762355952A priority patent/SU735192A3/en
Priority to SU762353705A priority patent/SU728735A3/en
Application granted granted Critical
Publication of FR2261538B1 publication Critical patent/FR2261538B1/fr
Granted 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
    • G01S1/38—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
    • 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)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Traffic Control Systems (AREA)

Abstract

Spread over the flight path are rotating arm two aerial systems or beacons transmitting hyperfrequencies of the same value or of near values. The aircraft (A) navigates itself with respect to several of these beacons (11) by phase modulations of the signals received from them. Means are provided to ensure that the rotating arms of the aerials are driven in synchronism. The hyperfrequency energy applied to the two aerials of a beacon is shifted in phase by pi/4. The aircraft have a beacon signal receiver and means for displaying the beacon data by a correlation between two signals taken from received signals with an on board created modulation, this correlation being followed by an integration.
FR7405812A 1974-02-20 1974-02-20 Phase modulated aircraft navigation system - aircraft receives signals from radio beacons, along flight path Granted FR2261538A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7405812A FR2261538A1 (en) 1974-02-20 1974-02-20 Phase modulated aircraft navigation system - aircraft receives signals from radio beacons, along flight path
DE2507401A DE2507401C3 (en) 1974-02-20 1975-02-18 Method for determining the position of a first transmitting and / or receiving device in relation to a second transmitting and / or receiving device and device for carrying out the method
CA220,364A CA1026465A (en) 1974-02-20 1975-02-18 Method and installation for data transmission
US05/550,481 US4019184A (en) 1974-02-20 1975-02-18 Direction-finding method and system
GB7031/75A GB1503211A (en) 1974-02-20 1975-02-19 Method and installation for data transmission
SU762355952A SU735192A3 (en) 1974-02-20 1976-05-04 Method and system for determining coordinates of aircraft in airfield area
SU762353705A SU728735A3 (en) 1974-02-20 1976-05-07 Radio technical system for aircraft landing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7405812A FR2261538A1 (en) 1974-02-20 1974-02-20 Phase modulated aircraft navigation system - aircraft receives signals from radio beacons, along flight path

Publications (2)

Publication Number Publication Date
FR2261538A1 true FR2261538A1 (en) 1975-09-12
FR2261538B1 FR2261538B1 (en) 1980-05-16

Family

ID=9135209

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7405812A Granted FR2261538A1 (en) 1974-02-20 1974-02-20 Phase modulated aircraft navigation system - aircraft receives signals from radio beacons, along flight path

Country Status (1)

Country Link
FR (1) FR2261538A1 (en)

Also Published As

Publication number Publication date
FR2261538B1 (en) 1980-05-16

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Legal Events

Date Code Title Description
ST Notification of lapse