NL57482C - - Google Patents

Info

Publication number
NL57482C
NL57482C NL57482DA NL57482C NL 57482 C NL57482 C NL 57482C NL 57482D A NL57482D A NL 57482DA NL 57482 C NL57482 C NL 57482C
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 NL57482C publication Critical patent/NL57482C/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
    • G01S3/48—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 continuous or intermittent and the phase difference of signals derived therefrom being measured

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Near-Field Transmission Systems (AREA)
NL57482D 1938-09-23 NL57482C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US231300A US2272056A (en) 1938-09-23 1938-09-23 Radio course indicator

Publications (1)

Publication Number Publication Date
NL57482C true NL57482C (en:Method)

Family

ID=22868632

Family Applications (1)

Application Number Title Priority Date Filing Date
NL57482D NL57482C (en:Method) 1938-09-23

Country Status (3)

Country Link
US (1) US2272056A (en:Method)
GB (1) GB533782A (en:Method)
NL (1) NL57482C (en:Method)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689345A (en) * 1949-06-25 1954-09-14 Int Standard Electric Corp Automatic approach control

Also Published As

Publication number Publication date
GB533782A (en) 1941-02-20
US2272056A (en) 1942-02-03

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