FR864546A - Appareil perfectionné pour le repérage par le son - Google Patents

Appareil perfectionné pour le repérage par le son

Info

Publication number
FR864546A
FR864546A FR864546DA FR864546A FR 864546 A FR864546 A FR 864546A FR 864546D A FR864546D A FR 864546DA FR 864546 A FR864546 A FR 864546A
Authority
FR
France
Prior art keywords
advanced device
sound tracking
tracking
sound
advanced
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.)
Kodak Pathe SA
Original Assignee
Kodak Pathe SA
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 Kodak Pathe SA filed Critical Kodak Pathe SA
Application granted granted Critical
Publication of FR864546A publication Critical patent/FR864546A/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)
FR864546D 1939-12-19 1939-12-19 Appareil perfectionné pour le repérage par le son Expired FR864546A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR864546T 1939-12-19

Publications (1)

Publication Number Publication Date
FR864546A true FR864546A (fr) 1941-04-29

Family

ID=9343938

Family Applications (1)

Application Number Title Priority Date Filing Date
FR864546D Expired FR864546A (fr) 1939-12-19 1939-12-19 Appareil perfectionné pour le repérage par le son

Country Status (1)

Country Link
FR (1) FR864546A (fr)

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