FR987445A - Doubt relief device for direction finding - Google Patents

Doubt relief device for direction finding

Info

Publication number
FR987445A
FR987445A FR987445DA FR987445A FR 987445 A FR987445 A FR 987445A FR 987445D A FR987445D A FR 987445DA FR 987445 A FR987445 A FR 987445A
Authority
FR
France
Prior art keywords
doubt
relief device
direction finding
finding
relief
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)
Inventor
Jean-Baptiste Lair
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR987445A publication Critical patent/FR987445A/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)
FR987445D 1943-12-30 1943-12-30 Doubt relief device for direction finding Expired FR987445A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR987445T 1943-12-30

Publications (1)

Publication Number Publication Date
FR987445A true FR987445A (en) 1951-08-13

Family

ID=9538881

Family Applications (1)

Application Number Title Priority Date Filing Date
FR987445D Expired FR987445A (en) 1943-12-30 1943-12-30 Doubt relief device for direction finding

Country Status (1)

Country Link
FR (1) FR987445A (en)

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