FR41977E - Improvements to aircraft tracking devices - Google Patents

Improvements to aircraft tracking devices

Info

Publication number
FR41977E
FR41977E FR41977DA FR41977E FR 41977 E FR41977 E FR 41977E FR 41977D A FR41977D A FR 41977DA FR 41977 E FR41977 E FR 41977E
Authority
FR
France
Prior art keywords
tracking devices
aircraft tracking
aircraft
devices
tracking
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.)
Anciens Etablissements Sautter Harle
Original Assignee
Anciens Etablissements Sautter Harle
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 Anciens Etablissements Sautter Harle filed Critical Anciens Etablissements Sautter Harle
Application granted granted Critical
Publication of FR41977E publication Critical patent/FR41977E/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
    • 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
    • G01S1/72—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 ultrasonic, sonic or infrasonic 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)
FR41977D 1932-01-15 1932-01-15 Improvements to aircraft tracking devices Expired FR41977E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR41977T 1932-01-15

Publications (1)

Publication Number Publication Date
FR41977E true FR41977E (en) 1933-05-04

Family

ID=8678092

Family Applications (1)

Application Number Title Priority Date Filing Date
FR41977D Expired FR41977E (en) 1932-01-15 1932-01-15 Improvements to aircraft tracking devices

Country Status (1)

Country Link
FR (1) FR41977E (en)

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