FR971336A - Repérage des avions par ondes électromagnétiques ultra-courtes - Google Patents

Repérage des avions par ondes électromagnétiques ultra-courtes

Info

Publication number
FR971336A
FR971336A FR971336DA FR971336A FR 971336 A FR971336 A FR 971336A FR 971336D A FR971336D A FR 971336DA FR 971336 A FR971336 A FR 971336A
Authority
FR
France
Prior art keywords
ultra
electromagnetic waves
aircraft tracking
short electromagnetic
short
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
English (en)
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 FR971336A publication Critical patent/FR971336A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/04—Non-resonant antennas, e.g. travelling-wave antenna with parts bent, folded, shaped, screened or electrically loaded to obtain desired phase relation of radiation from selected sections of the antenna
    • 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)
FR971336D 1939-11-09 1939-11-09 Repérage des avions par ondes électromagnétiques ultra-courtes Expired FR971336A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR971336T 1939-11-09

Publications (1)

Publication Number Publication Date
FR971336A true FR971336A (fr) 1951-01-16

Family

ID=9512613

Family Applications (1)

Application Number Title Priority Date Filing Date
FR971336D Expired FR971336A (fr) 1939-11-09 1939-11-09 Repérage des avions par ondes électromagnétiques ultra-courtes

Country Status (1)

Country Link
FR (1) FR971336A (fr)

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