FR2251825B1 - - Google Patents

Info

Publication number
FR2251825B1
FR2251825B1 FR7437672A FR7437672A FR2251825B1 FR 2251825 B1 FR2251825 B1 FR 2251825B1 FR 7437672 A FR7437672 A FR 7437672A FR 7437672 A FR7437672 A FR 7437672A FR 2251825 B1 FR2251825 B1 FR 2251825B1
Authority
FR
France
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
FR7437672A
Other versions
FR2251825A1 (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.)
Decca Ltd
Original Assignee
Decca Ltd
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 Decca Ltd filed Critical Decca Ltd
Publication of FR2251825A1 publication Critical patent/FR2251825A1/fr
Application granted granted Critical
Publication of FR2251825B1 publication Critical patent/FR2251825B1/fr
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
    • G01S1/308—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 particularly adapted to Omega 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)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Networks Using Active Elements (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Optical Communication System (AREA)
FR7437672A 1973-11-16 1974-11-15 Expired FR2251825B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5318373A GB1468016A (en) 1973-11-16 1973-11-16 Phase comparison radio navigation systems

Publications (2)

Publication Number Publication Date
FR2251825A1 FR2251825A1 (fr) 1975-06-13
FR2251825B1 true FR2251825B1 (fr) 1982-10-29

Family

ID=10466916

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7437672A Expired FR2251825B1 (fr) 1973-11-16 1974-11-15

Country Status (8)

Country Link
US (1) US3981015A (fr)
JP (1) JPS5621106B2 (fr)
DE (1) DE2454360C2 (fr)
DK (1) DK140269B (fr)
FR (1) FR2251825B1 (fr)
GB (1) GB1468016A (fr)
NO (1) NO142320C (fr)
SE (1) SE404432B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3001014C2 (de) * 1980-01-12 1982-06-24 Južnoe proizvodstvennoe ob"edinenie po morskim geologorazvedočnym rabotam "Južmorgeologija", Gelendžik, Krasnodarskogo kraja Elektronischer Digitalanzeigeempfänger für das Decca-Funknavigationssystem
JP3401185B2 (ja) * 1998-05-29 2003-04-28 三菱電機株式会社 無線通信装置及び無線通信方法
IL169854A (en) * 2005-07-25 2013-11-28 Elta Systems Ltd System and method for finding receiver-transmitter location
IL169855A (en) 2005-07-25 2014-05-28 Elta Systems Ltd A system and method for locating a receiver location
JP2008083918A (ja) * 2006-09-27 2008-04-10 Aisin Aw Co Ltd ナビゲーション装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB955281A (en) * 1961-06-19 1964-04-15 Decca Ltd Improvements in or relating to radio navigation systems

Also Published As

Publication number Publication date
DK140269C (fr) 1979-12-10
SE404432B (sv) 1978-10-02
GB1468016A (en) 1977-03-23
JPS50114191A (fr) 1975-09-06
DE2454360A1 (de) 1975-05-22
DE2454360C2 (de) 1982-12-09
SE7414383L (fr) 1975-05-20
FR2251825A1 (fr) 1975-06-13
US3981015A (en) 1976-09-14
DK140269B (da) 1979-07-16
JPS5621106B2 (fr) 1981-05-18
DK596774A (fr) 1975-07-07
NO142320C (no) 1980-07-30
NO142320B (no) 1980-04-21
NO744109L (fr) 1975-06-16

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Legal Events

Date Code Title Description
ST Notification of lapse