GB847252A - Improvements in or relating to instrument approach and landing systems - Google Patents

Improvements in or relating to instrument approach and landing systems

Info

Publication number
GB847252A
GB847252A GB6808/57A GB680857A GB847252A GB 847252 A GB847252 A GB 847252A GB 6808/57 A GB6808/57 A GB 6808/57A GB 680857 A GB680857 A GB 680857A GB 847252 A GB847252 A GB 847252A
Authority
GB
United Kingdom
Prior art keywords
craft
runway
touch
height
flight path
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
GB6808/57A
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.)
Raytheon Co
Original Assignee
Hughes Aircraft Co
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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of GB847252A publication Critical patent/GB847252A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
    • H01Q19/175—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements arrayed along the focal line of a cylindrical focusing surface
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H01Q13/0233—Horns fed by a slotted waveguide array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/22—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation in accordance with variation of frequency of radiated wave

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

847,252. Radio navigation. HUGHES AIRCRAFT CO. Feb. 28, 1957 [March 6, 1956], No. 6808/57. Drawings to Specification. Class 40(7). In an aircraft landing system, of the type described in Specification 847,253, the runway is indicated by longitudinal and transverse high frequency radio scanning beams which respectively provide azimuth and elevation readings of the craft position at the craft receiver. Additionally, a third beam is provided which gives the instantaneous range of the craft from the touch-down point. The third beam is radiated from the transmitter antenna, positioned at one side of the runway, opposite the touch-down point. It is fan-shaped, the plane of the lobe being vertical, and is positioned in azimuth in dependence upon its frequency, which is varied periodically. The transmitter includes a backwardwave oscillator electronically tuned by a voltage wave having a shape corresponding to the required beam movement. A signal representative of the height of the craft above the runway is obtained, at the craft by first deriving a signal representative of the height of the required flight path above the runway at the measured range and then adding a further signal corresponding to the deviation of the craft from the flight path in elevation.
GB6808/57A 1956-03-06 1957-02-28 Improvements in or relating to instrument approach and landing systems Expired GB847252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US847252XA 1956-03-06 1956-03-06

Publications (1)

Publication Number Publication Date
GB847252A true GB847252A (en) 1960-09-07

Family

ID=22186832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6808/57A Expired GB847252A (en) 1956-03-06 1957-02-28 Improvements in or relating to instrument approach and landing systems

Country Status (1)

Country Link
GB (1) GB847252A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2042500A1 (en) * 1968-07-01 1971-02-12 Marconi Co Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2042500A1 (en) * 1968-07-01 1971-02-12 Marconi Co Ltd

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