FR991182A - Balisage par détection d'obstacles - Google Patents

Balisage par détection d'obstacles

Info

Publication number
FR991182A
FR991182A FR991182DA FR991182A FR 991182 A FR991182 A FR 991182A FR 991182D A FR991182D A FR 991182DA FR 991182 A FR991182 A FR 991182A
Authority
FR
France
Prior art keywords
obstacle detection
detection marking
marking
obstacle
detection
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 FR991182A publication Critical patent/FR991182A/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
    • G01S1/02—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)
FR991182D 1944-04-07 1944-04-07 Balisage par détection d'obstacles Expired FR991182A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR991182T 1944-04-07

Publications (1)

Publication Number Publication Date
FR991182A true FR991182A (fr) 1951-10-01

Family

ID=9550105

Family Applications (1)

Application Number Title Priority Date Filing Date
FR991182D Expired FR991182A (fr) 1944-04-07 1944-04-07 Balisage par détection d'obstacles

Country Status (1)

Country Link
FR (1) FR991182A (fr)

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