FR894642A - Improvements to direction-finding aerials - Google Patents

Improvements to direction-finding aerials

Info

Publication number
FR894642A
FR894642A FR894642DA FR894642A FR 894642 A FR894642 A FR 894642A FR 894642D A FR894642D A FR 894642DA FR 894642 A FR894642 A FR 894642A
Authority
FR
France
Prior art keywords
aerials
finding
finding aerials
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.)
Ind Radioelectriques SA Des
Original Assignee
Ind Radioelectriques SA Des
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 Ind Radioelectriques SA Des filed Critical Ind Radioelectriques SA Des
Application granted granted Critical
Publication of FR894642A publication Critical patent/FR894642A/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)
FR894642D 1943-02-15 1943-02-15 Improvements to direction-finding aerials Expired FR894642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR894642T 1943-02-15

Publications (1)

Publication Number Publication Date
FR894642A true FR894642A (en) 1944-12-29

Family

ID=9390545

Family Applications (1)

Application Number Title Priority Date Filing Date
FR894642D Expired FR894642A (en) 1943-02-15 1943-02-15 Improvements to direction-finding aerials

Country Status (1)

Country Link
FR (1) FR894642A (en)

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