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
  • G01S1/306—Analogous systems in which frequency-related signals (harmonics) are compared in phase, e.g. DECCA systems

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)
• Superheterodyne Receivers (AREA)
• Circuits Of Receivers In General (AREA)
• Radar Systems Or Details Thereof (AREA)
• Traffic Control Systems (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=26645682

Family Applications (1)

Country Status (9)

Family Cites Families (2)

• 1981
  • 1981-04-08 NL NL8101720A patent/NL8101720A/nl not_active Application Discontinuation
• 1982
  • 1982-02-10 DE DE19823204591 patent/DE3204591A1/de not_active Withdrawn
  • 1982-02-15 IT IT19667/82A patent/IT1149652B/it active
  • 1982-02-15 SE SE8200881A patent/SE8200881L/ not_active Application Discontinuation
  • 1982-02-15 GB GB8204427A patent/GB2093310B/en not_active Expired
  • 1982-02-15 DK DK65682A patent/DK65682A/da unknown
  • 1982-02-15 NO NO820450A patent/NO820450L/no unknown
  • 1982-02-16 AU AU80510/82A patent/AU8051082A/en not_active Abandoned
  • 1982-02-17 FR FR8202588A patent/FR2500170A1/fr active Pending

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