FR854842A - Procédé et appareil de sondage aérien - Google Patents

Procédé et appareil de sondage aérien

Info

Publication number
FR854842A
FR854842A FR854842DA FR854842A FR 854842 A FR854842 A FR 854842A FR 854842D A FR854842D A FR 854842DA FR 854842 A FR854842 A FR 854842A
Authority
FR
France
Prior art keywords
survey method
aerial survey
aerial
survey
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)
Inventor
Pierre Hebras
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 filed Critical
Application granted granted Critical
Publication of FR854842A publication Critical patent/FR854842A/fr
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)
FR854842D 1939-01-11 1939-01-11 Procédé et appareil de sondage aérien Expired FR854842A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR854842T 1939-01-11

Publications (1)

Publication Number Publication Date
FR854842A true FR854842A (fr) 1940-04-25

Family

ID=9327955

Family Applications (1)

Application Number Title Priority Date Filing Date
FR854842D Expired FR854842A (fr) 1939-01-11 1939-01-11 Procédé et appareil de sondage aérien

Country Status (1)

Country Link
FR (1) FR854842A (fr)

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