GB738945A - Radio navigation-aiding system for aircraft - Google Patents

Radio navigation-aiding system for aircraft

Info

Publication number
GB738945A
GB738945A GB30997/53A GB3099753A GB738945A GB 738945 A GB738945 A GB 738945A GB 30997/53 A GB30997/53 A GB 30997/53A GB 3099753 A GB3099753 A GB 3099753A GB 738945 A GB738945 A GB 738945A
Authority
GB
United Kingdom
Prior art keywords
craft
aircraft
correct
indication
transmitter
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
GB30997/53A
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.)
Sadir Carpentier SA
Original Assignee
Sadir Carpentier SA
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 Sadir Carpentier SA filed Critical Sadir Carpentier SA
Publication of GB738945A publication Critical patent/GB738945A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

738,945. Radio direction finding. SADIRCARPENTIER. Nov. 9, 1953 [Dec. 17, 1952], No. 30997/53. Class 40 (7). The invention relates to direction finding equipment for enabling an aircraft to be directed towards a transmitting station. Such equipment may comprise two aerials 1 and 2 symmetrically arranged on either side of the plane of symmetry of the craft, switching means to obtain by reflective action or by phase shifts in the connections two overlapping polar diagrams, and a co-operating transmitter radiating circularly polarized waves. It is pointed out that, though aerials such as 1 or 2, consisting of straight dipoles, regarded by themselves have linear polarization, when they are considered in relation to the ground plane provided by the craft the polarization is elliptical and may comprise ellipses such as A and B respectively for the two polar diagrams. Linearly polarized signals when received on the two diagrams will give a correct equisignal indication when the craft is on course provided that an even keel is maintained. But, as is explained with reference to Figs. 6 to 10 (not shown), if the craft is tilted about its longitudinal axis a correct direction indication will no longer be given. Operation with a co-operating circularly-polarized transmitter enables errors due to the tilting of the craft about this axis to be avoided though an adjustment made once and for all to take into account the characteristics of aircraft-aerial combination may be necessary to ensure that a correct-heading indication is given when the craft is directed towards the transmitter.
GB30997/53A 1952-12-17 1953-11-09 Radio navigation-aiding system for aircraft Expired GB738945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1068355T 1952-12-17

Publications (1)

Publication Number Publication Date
GB738945A true GB738945A (en) 1955-10-19

Family

ID=9603719

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30997/53A Expired GB738945A (en) 1952-12-17 1953-11-09 Radio navigation-aiding system for aircraft

Country Status (2)

Country Link
FR (1) FR1068355A (en)
GB (1) GB738945A (en)

Also Published As

Publication number Publication date
FR1068355A (en) 1954-06-24

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