FR971272A - Improvements to direction-finding systems - Google Patents

Improvements to direction-finding systems

Info

Publication number
FR971272A
FR971272A FR971272DA FR971272A FR 971272 A FR971272 A FR 971272A FR 971272D A FR971272D A FR 971272DA FR 971272 A FR971272 A FR 971272A
Authority
FR
France
Prior art keywords
finding systems
finding
systems
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
Other languages
French (fr)
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Application granted granted Critical
Publication of FR971272A publication Critical patent/FR971272A/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
    • G01S3/06—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna
    • G01S3/065—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna by using non-directional aerial

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR971272D 1940-03-12 1940-03-12 Improvements to direction-finding systems Expired FR971272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR971272T 1940-03-12

Publications (1)

Publication Number Publication Date
FR971272A true FR971272A (en) 1951-01-15

Family

ID=9512112

Family Applications (1)

Application Number Title Priority Date Filing Date
FR971272D Expired FR971272A (en) 1940-03-12 1940-03-12 Improvements to direction-finding systems

Country Status (1)

Country Link
FR (1) FR971272A (en)

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