GB1038626A - Improvements relating to radio beacons - Google Patents

Improvements relating to radio beacons

Info

Publication number
GB1038626A
GB1038626A GB20747/62A GB2074762A GB1038626A GB 1038626 A GB1038626 A GB 1038626A GB 20747/62 A GB20747/62 A GB 20747/62A GB 2074762 A GB2074762 A GB 2074762A GB 1038626 A GB1038626 A GB 1038626A
Authority
GB
United Kingdom
Prior art keywords
frequency
wave
aerials
cylinder
slot
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
GB20747/62A
Inventor
Charles William Earp
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 to NL293383D priority Critical patent/NL293383A/xx
Priority to BE633022D priority patent/BE633022A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB20747/62A priority patent/GB1038626A/en
Priority to US280834A priority patent/US3273152A/en
Priority to CH658263A priority patent/CH407257A/en
Publication of GB1038626A publication Critical patent/GB1038626A/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
    • G01S1/38—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)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Details Of Aerials (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

1,038,626. Aerials; radio navigation. STANDARD TELEPHONES & CABLES Ltd. May 24, 1963 [May 30, 1962], No. 20747/62. Headings H4A and H4D. A Doppler-effect radio beacon comprises a hollow metal circular cylinder 1 having parallel slots 2 forming a circular array of slot aerials, means to feed the slot aerials cyclically and consecutively around the circle with a wave of frequency F 1 , means to feed the aerials in a similar order with a wave of frequency F 2 , the two feeding cycles being always diametrically opposite on the circle and progressing at a constant rate G, and means to radiate a third wave of frequency F 3 equal to (F 1 +F 2 )/2 via one or more slot aerials. Aerials, Figs. 1, 2 and 3.-The waves of frequency F 3 may be generated by an energized loop aerial on the axis within cylinder 1, the waves from which will propagate out of all the slots; or from a horizontal loop outside the cylinder but on the axis thereof. The commutative feed of energy on frequency F 1 is capacitative via rotating arms 10, 11, Fig. 3, a given slot being energized by feeding to metallic portions on either side of it; a similar arrangement is provided for frequency F 2 energy. To protect the aerial system from hot gaseous jets &c. on an airport runway 3, Fig. 2, steel cylinder 1 and its feeders are installed in a well; the runway is rebuilt with asbestos 4 concreted over. An aircraft may then be guided to rest over the cylinder. Radio navigation.-The beacon provides for elevation and azimuth determination by an aircraft receiver. Frequency F 3 is made equal to (F 1 + F 2 )/2 by utilizing the sidebands of a carrier of frequency F 3 for the frequencies F 1 , F2; wave F 3 is amplitude-modulated at frequency G. At the receiver the frequency deviation d of a beat wave f=F 1 (or F 2 )-F 3 is measured by a frequency discriminator; if D is the frequency deviation in a horizontal plane, the angle of elevation of the receiver is sin<SP>-1</SP>(d/D). For evaluation of azimuth, the phase of the amplitude modulation on wave F 3 is compared with the phase of the output of the frequency discriminator.
GB20747/62A 1962-05-30 1962-05-30 Improvements relating to radio beacons Expired GB1038626A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL293383D NL293383A (en) 1962-05-30
BE633022D BE633022A (en) 1962-05-30
GB20747/62A GB1038626A (en) 1962-05-30 1962-05-30 Improvements relating to radio beacons
US280834A US3273152A (en) 1962-05-30 1963-05-16 Doppler vor beacon
CH658263A CH407257A (en) 1962-05-30 1963-05-27 Radio beacon equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20747/62A GB1038626A (en) 1962-05-30 1962-05-30 Improvements relating to radio beacons

Publications (1)

Publication Number Publication Date
GB1038626A true GB1038626A (en) 1966-08-10

Family

ID=10150983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20747/62A Expired GB1038626A (en) 1962-05-30 1962-05-30 Improvements relating to radio beacons

Country Status (5)

Country Link
US (1) US3273152A (en)
BE (1) BE633022A (en)
CH (1) CH407257A (en)
GB (1) GB1038626A (en)
NL (1) NL293383A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3691560A (en) * 1961-02-02 1972-09-12 Calvin M Hammack Method and apparatus for geometrical determination
US3435457A (en) * 1965-12-07 1969-03-25 Us Army Underground antenna
US3775772A (en) * 1966-05-11 1973-11-27 Us Air Force Ultra hard communications antenna
US3720949A (en) * 1970-04-06 1973-03-13 Us Navy Variable resolution radar for tropospheric sounders
US3972044A (en) * 1974-04-08 1976-07-27 Andrew Alford Antenna system for Doppler VOR ground stations
US5530358A (en) * 1994-01-25 1996-06-25 Baker Hughes, Incorporated Method and apparatus for measurement-while-drilling utilizing improved antennas

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1898474A (en) * 1929-01-19 1933-02-21 John A Willoughby Aircraft landing system
US2665381A (en) * 1947-10-16 1954-01-05 Smith Slotted cylindrical antenna
NL102640C (en) * 1954-11-16
DE1123000B (en) * 1958-07-16 1962-02-01 Standard Elektrik Lorenz Ag Arrangement for wireless determination of direction based on the Doppler effect
US3103663A (en) * 1961-08-23 1963-09-10 Louis W Parker Three-dimensional direction finder for aircraft guidance

Also Published As

Publication number Publication date
BE633022A (en)
NL293383A (en)
US3273152A (en) 1966-09-13
CH407257A (en) 1966-02-15

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