NL278444A - - Google Patents

Info

Publication number
NL278444A
NL278444A NL278444DA NL278444A NL 278444 A NL278444 A NL 278444A NL 278444D A NL278444D A NL 278444DA NL 278444 A NL278444 A NL 278444A
Authority
NL
Netherlands
Application number
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.)
Publication of NL278444A publication Critical patent/NL278444A/xx

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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/50—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being pulse modulated and the time difference of their arrival being measured
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/52—Systems for determining direction or deviation from predetermined direction using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal
    • G01S3/54—Systems for determining direction or deviation from predetermined direction using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal the apparent movement of the antenna being produced by coupling the receiver cyclically and sequentially to each of several fixed spaced antennas

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
NL278444D 1961-05-15 NL278444A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17570/61A GB959106A (en) 1961-05-15 1961-05-15 Improvements in or relating to radio direction finders

Publications (1)

Publication Number Publication Date
NL278444A true NL278444A (xx)

Family

ID=10097499

Family Applications (1)

Application Number Title Priority Date Filing Date
NL278444D NL278444A (xx) 1961-05-15

Country Status (5)

Country Link
US (1) US3196439A (xx)
DE (1) DE1261905B (xx)
GB (1) GB959106A (xx)
NL (1) NL278444A (xx)
SE (1) SE317114B (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888593A (en) * 1987-12-15 1989-12-19 Signal Science, Inc. Time difference of arrival geolocation method, etc.
US8134493B2 (en) * 2009-07-02 2012-03-13 Raytheon Company System and method for precision geolocation utilizing multiple sensing modalities

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2287174A (en) * 1939-09-16 1942-06-23 Bell Telephone Labor Inc Relative phase measuring circuit and method
DE911223C (de) * 1940-06-22 1954-05-10 Atlas Werke Ag Verfahren und Vorrichtung zur Entfernungs- und (oder) Richtungsbestimmung nach der Echomethode
US2415955A (en) * 1942-02-28 1947-02-18 Rca Corp Radio direction finding
US2434915A (en) * 1942-05-11 1948-01-27 Standard Telephones Cables Ltd Radio beacon system for bearing determination
US2422122A (en) * 1942-08-28 1947-06-10 Rca Corp Radio direction finding
US2489304A (en) * 1945-06-27 1949-11-29 Standard Telephones Cables Ltd Direction finder
US3078415A (en) * 1949-06-29 1963-02-19 Raytheon Co Phase measuring devices
US2684474A (en) * 1951-04-20 1954-07-20 Us Army Meteorological telemetering system
US2637841A (en) * 1951-04-20 1953-05-05 Us Army Position finding of electrical disturbances
US2996712A (en) * 1951-05-05 1961-08-15 Hazeltine Research Inc Wave-signal direction-indicating apparatus

Also Published As

Publication number Publication date
US3196439A (en) 1965-07-20
DE1261905B (de) 1968-02-29
GB959106A (en) 1964-05-27
SE317114B (xx) 1969-11-10

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