NL7205372A - - Google Patents

Info

Publication number
NL7205372A
NL7205372A NL7205372A NL7205372A NL7205372A NL 7205372 A NL7205372 A NL 7205372A NL 7205372 A NL7205372 A NL 7205372A NL 7205372 A NL7205372 A NL 7205372A NL 7205372 A NL7205372 A NL 7205372A
Authority
NL
Netherlands
Application number
NL7205372A
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 filed Critical
Publication of NL7205372A publication Critical patent/NL7205372A/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
    • G01S3/80—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 ultrasonic, sonic or infrasonic waves
    • G01S3/802—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
    • 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
    • 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
    • G01S3/80—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 ultrasonic, sonic or infrasonic waves
    • G01S3/8006—Multi-channel systems specially adapted for direction-finding, i.e. having a single aerial system capable of giving simultaneous indications of the directions of different signals
NL7205372A 1971-04-21 1972-04-20 NL7205372A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7114137A FR2134136B2 (xx) 1971-04-21 1971-04-21

Publications (1)

Publication Number Publication Date
NL7205372A true NL7205372A (xx) 1972-10-24

Family

ID=9075678

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7205372A NL7205372A (xx) 1971-04-21 1972-04-20

Country Status (10)

Country Link
US (1) US3792479A (xx)
BE (1) BE782192A (xx)
CA (1) CA966926A (xx)
DE (1) DE2219678C2 (xx)
ES (1) ES401970A1 (xx)
FR (1) FR2134136B2 (xx)
GB (1) GB1377574A (xx)
IT (1) IT954726B (xx)
NL (1) NL7205372A (xx)
ZA (1) ZA722711B (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2243447B1 (xx) * 1973-09-11 1976-06-18 Cit Alcatel
FR2294589A1 (fr) * 1974-12-10 1976-07-09 Cit Alcatel Dispositif de formation de voies utilisant des detecteurs repartis sur une base circulaire
FR2294590A1 (fr) * 1974-12-10 1976-07-09 Cit Alcatel Dispositif de formation de voies utilisant des detecteurs repartis sur une base circulaire
FR2315800A1 (fr) * 1975-06-26 1977-01-21 Cit Alcatel Dispositif de formation de voies
GB2140238A (en) * 1983-05-11 1984-11-21 Racal Communications Equip Direction finding

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449711A (en) * 1965-08-30 1969-06-10 Magnavox Co Beam former
FR2049666A5 (xx) * 1969-06-16 1971-03-26 Cit Alcatel

Also Published As

Publication number Publication date
ZA722711B (en) 1973-03-28
FR2134136A2 (xx) 1972-12-08
DE2219678C2 (de) 1982-04-29
FR2134136B2 (xx) 1974-04-05
BE782192A (fr) 1972-10-17
DE2219678A1 (de) 1972-11-02
ES401970A1 (es) 1975-11-01
IT954726B (it) 1973-09-15
CA966926A (en) 1975-04-29
US3792479A (en) 1974-02-12
GB1377574A (en) 1974-12-18

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Legal Events

Date Code Title Description
BB A search report has been drawn up
BB A search report has been drawn up
BV The patent application has lapsed
BC A request for examination has been filed