GB539290A - Direction finding system - Google Patents

Direction finding system

Info

Publication number
GB539290A
GB539290A GB11002/40A GB1100240A GB539290A GB 539290 A GB539290 A GB 539290A GB 11002/40 A GB11002/40 A GB 11002/40A GB 1100240 A GB1100240 A GB 1100240A GB 539290 A GB539290 A GB 539290A
Authority
GB
United Kingdom
Prior art keywords
loop
horizontal
dipole
aerial
direction finding
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
GB11002/40A
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
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB539290A publication Critical patent/GB539290A/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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/04—Details
    • G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems

Landscapes

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

Abstract

539,290 Directive wireless systems. STANDARD TELEPHONES & CABLES, Ltd. June 28, 1940, No. 11002. Convention date, Feb. 23. Drawings to Specification. [Class 40 (v)] Night effect in a loop aerial used for directionfinding is eliminated by the use of a horizontal dipole aerial mounted above and in the same plane as the loop. The dipole turns with the loop, and its output after adjustment of phase if necessary, is superimposed on that of the loop so as to neutralize the voltage due to picking up of horizontally polarized waves inclined to the horizontal, such as those reflected from the ionosphere and from the earth. The Specification gives a mathematical analysis to show that this is possible.
GB11002/40A 1940-02-23 1940-06-28 Direction finding system Expired GB539290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US539290XA 1940-02-23 1940-02-23

Publications (1)

Publication Number Publication Date
GB539290A true GB539290A (en) 1941-09-03

Family

ID=21987512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11002/40A Expired GB539290A (en) 1940-02-23 1940-06-28 Direction finding system

Country Status (1)

Country Link
GB (1) GB539290A (en)

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