CA948730A - Vehicle location systems - Google Patents

Vehicle location systems

Info

Publication number
CA948730A
CA948730A CA121,161A CA121161A CA948730A CA 948730 A CA948730 A CA 948730A CA 121161 A CA121161 A CA 121161A CA 948730 A CA948730 A CA 948730A
Authority
CA
Canada
Prior art keywords
vehicle location
location systems
systems
vehicle
location
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
CA121,161A
Other versions
CA121161S (en
Inventor
Ronald A. Tyler
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.)
CMC Electronics Inc
Original Assignee
Canadian Marconi Co
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 Canadian Marconi Co filed Critical Canadian Marconi Co
Application granted granted Critical
Publication of CA948730A publication Critical patent/CA948730A/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
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/753—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using frequency selective elements, e.g. resonator
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar Systems Or Details Thereof (AREA)
CA121,161A 1970-09-04 1971-08-23 Vehicle location systems Expired CA948730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4237470 1970-09-04

Publications (1)

Publication Number Publication Date
CA948730A true CA948730A (en) 1974-06-04

Family

ID=10424145

Family Applications (1)

Application Number Title Priority Date Filing Date
CA121,161A Expired CA948730A (en) 1970-09-04 1971-08-23 Vehicle location systems

Country Status (3)

Country Link
AU (1) AU3245271A (en)
CA (1) CA948730A (en)
GB (1) GB1296410A (en)

Also Published As

Publication number Publication date
GB1296410A (en) 1972-11-15
AU3245271A (en) 1973-02-22

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