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

Landscapes

• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Radar, Positioning & Navigation (AREA)
• Remote Sensing (AREA)
• Position Fixing By Use Of Radio Waves (AREA)
• Networks Using Active Elements (AREA)
• Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
• Navigation (AREA)
• Mobile Radio Communication Systems (AREA)

Applications Claiming Priority (1)

Publications (3)

Family

ID=10467071

Family Applications (1)

Country Status (7)

Families Citing this family (1)

Family Cites Families (3)

• 1973
  • 1973-11-16 GB GB5322973A patent/GB1468018A/en not_active Expired
• 1974
  • 1974-11-15 JP JP13122474A patent/JPS5621108B2/ja not_active Expired
  • 1974-11-15 NO NO744111A patent/NO142368C/no unknown
  • 1974-11-15 DK DK596974AA patent/DK141829B/da not_active IP Right Cessation
  • 1974-11-15 DE DE19742454359 patent/DE2454359A1/de not_active Ceased
  • 1974-11-15 US US05/524,199 patent/US3973261A/en not_active Expired - Lifetime
  • 1974-11-15 FR FR7437674A patent/FR2251827B1/fr not_active Expired

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