GB642399A - Improvements in or relating to radio navigation systems - Google Patents

Improvements in or relating to radio navigation systems

Info

Publication number
GB642399A
GB642399A GB1663549A GB1663549A GB642399A GB 642399 A GB642399 A GB 642399A GB 1663549 A GB1663549 A GB 1663549A GB 1663549 A GB1663549 A GB 1663549A GB 642399 A GB642399 A GB 642399A
Authority
GB
United Kingdom
Prior art keywords
relay
signals
frequency
relays
period
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
GB1663549A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB642399A publication Critical patent/GB642399A/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
    • 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
    • G01S1/08—Systems for determining direction or position line
    • G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
    • G01S1/30—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference
    • 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)
  • Eye Examination Apparatus (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Manipulation Of Pulses (AREA)
GB1663549A 1946-08-21 1946-08-21 Improvements in or relating to radio navigation systems Expired GB642399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2498746A GB642368A (en) 1946-08-21 1946-08-21 Improvements in or relating to radio navigation systems

Publications (1)

Publication Number Publication Date
GB642399A true GB642399A (en) 1950-08-30

Family

ID=10220377

Family Applications (4)

Application Number Title Priority Date Filing Date
GB2498746A Expired GB642368A (en) 1945-08-27 1946-08-21 Improvements in or relating to radio navigation systems
GB1663649A Expired GB642400A (en) 1946-08-21 1946-08-21 Improvements in or relating to receiving apparatus for radio navigation systems
GB1663549A Expired GB642399A (en) 1946-08-21 1946-08-21 Improvements in or relating to radio navigation systems
GB1663449A Expired GB642398A (en) 1946-08-21 1946-08-21 Improvements in or relating to receiving apparatus for radio navigation systems

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB2498746A Expired GB642368A (en) 1945-08-27 1946-08-21 Improvements in or relating to radio navigation systems
GB1663649A Expired GB642400A (en) 1946-08-21 1946-08-21 Improvements in or relating to receiving apparatus for radio navigation systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1663449A Expired GB642398A (en) 1946-08-21 1946-08-21 Improvements in or relating to receiving apparatus for radio navigation systems

Country Status (4)

Country Link
BE (1) BE471789A (enExample)
FR (1) FR950066A (enExample)
GB (4) GB642368A (enExample)
NL (3) NL147239B (enExample)

Also Published As

Publication number Publication date
GB642398A (en) 1950-08-30
GB642368A (en) 1950-08-30
NL89621C (enExample)
GB642400A (en) 1950-08-30
NL70479C (enExample)
BE471789A (enExample)
NL147239B (nl)
FR950066A (fr) 1949-09-16

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