FR1209200A - Improvements to proximity warning devices - Google Patents

Improvements to proximity warning devices

Info

Publication number
FR1209200A
FR1209200A FR1209200DA FR1209200A FR 1209200 A FR1209200 A FR 1209200A FR 1209200D A FR1209200D A FR 1209200DA FR 1209200 A FR1209200 A FR 1209200A
Authority
FR
France
Prior art keywords
warning devices
proximity warning
proximity
devices
warning
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.)
AVEL CORP GENEVA
Original Assignee
AVEL CORP GENEVA
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 AVEL CORP GENEVA filed Critical AVEL CORP GENEVA
Application granted granted Critical
Publication of FR1209200A publication Critical patent/FR1209200A/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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/765—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with exchange of information between interrogator and responder

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1209200D 1957-06-06 1958-06-05 Improvements to proximity warning devices Expired FR1209200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1209200X 1957-06-06

Publications (1)

Publication Number Publication Date
FR1209200A true FR1209200A (en) 1960-02-29

Family

ID=10882677

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1209200D Expired FR1209200A (en) 1957-06-06 1958-06-05 Improvements to proximity warning devices

Country Status (1)

Country Link
FR (1) FR1209200A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263872B (en) * 1963-03-09 1968-03-21 Telefunken Patent Flight surveillance system with relay distance measurement
EP0354302A1 (en) * 1988-08-08 1990-02-14 ESG Elektroniksystem-und Logistik-Gesellschaft mit beschränkter Haftung Method of identifying ships

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263872B (en) * 1963-03-09 1968-03-21 Telefunken Patent Flight surveillance system with relay distance measurement
EP0354302A1 (en) * 1988-08-08 1990-02-14 ESG Elektroniksystem-und Logistik-Gesellschaft mit beschränkter Haftung Method of identifying ships

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