NL49017C - - Google Patents

Info

Publication number
NL49017C
NL49017C NL49017DA NL49017C NL 49017 C NL49017 C NL 49017C NL 49017D A NL49017D A NL 49017DA NL 49017 C NL49017 C NL 49017C
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 NL49017C publication Critical patent/NL49017C/xx
Priority claimed from GB5412/37A external-priority patent/GB490940A/en

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
    • G01S3/143—Systems for determining direction or deviation from predetermined direction by vectorial combination of signals derived from differently oriented antennae
    • 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
    • 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
    • G01S1/72—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 ultrasonic, sonic or infrasonic 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
    • G01S3/02—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
NL49017D 1936-11-06 NL49017C (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB207367X 1936-11-06
GB5412/37A GB490940A (en) 1936-11-06 1937-02-23 Improvements in or relating to radio direction finding apparatus

Publications (1)

Publication Number Publication Date
NL49017C true NL49017C (de)

Family

ID=32071221

Family Applications (2)

Application Number Title Priority Date Filing Date
NL49017D NL49017C (de) 1936-11-06
NL50131D NL50131C (de) 1936-11-06

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL50131D NL50131C (de) 1936-11-06

Country Status (5)

Country Link
US (2) US2215781A (de)
CH (2) CH207367A (de)
FR (1) FR828300A (de)
GB (1) GB484590A (de)
NL (2) NL50131C (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475412A (en) * 1949-07-05 Torcheux
US2415954A (en) * 1942-02-28 1947-02-18 Rca Corp Radio direction finding
US2415955A (en) * 1942-02-28 1947-02-18 Rca Corp Radio direction finding
US2422073A (en) * 1942-07-30 1947-06-10 Rca Corp Radio direction finder
US2419994A (en) * 1942-08-01 1947-05-06 Rca Corp Direction finding
US2476977A (en) * 1944-06-24 1949-07-26 Paul G Hansel Radio direction finder
US2666192A (en) * 1944-07-27 1954-01-12 Frederick V Hunt Apparatus for determining the direction of underwater targets
US2450014A (en) * 1944-10-28 1948-09-28 Standard Telephones Cables Ltd Electronic goniometer for radio direction finders
US2524768A (en) * 1944-12-16 1950-10-10 Standard Telephones Cables Ltd Radio direction finder
US2485642A (en) * 1945-03-05 1949-10-25 Standard Telephones Cables Ltd Electronic switching system
US2468109A (en) * 1945-03-19 1949-04-26 Standard Telephones Cables Ltd Direction finder
US2475612A (en) * 1945-06-27 1949-07-12 Paul G Hansel Direction finding system
US2494553A (en) * 1945-10-16 1950-01-17 Paul G Hansel Direction finding system
BE478008A (de) * 1946-12-12
US2883663A (en) * 1955-03-11 1959-04-21 William J Kessler Means for direction finding and ranging on atmospherics
US3007162A (en) * 1957-07-23 1961-10-31 Albert C Nolte Sr Airplane instrument approach and landing system
US3099009A (en) * 1960-02-05 1963-07-23 Collins Radio Co Automatic direction finder system
US7307595B2 (en) * 2004-12-21 2007-12-11 Q-Track Corporation Near field location system and method
US7298314B2 (en) * 2002-08-19 2007-11-20 Q-Track Corporation Near field electromagnetic positioning system and method
US7414571B2 (en) * 2002-08-19 2008-08-19 Q-Track Corporation Low frequency asset tag tracking system and method
US6963301B2 (en) * 2002-08-19 2005-11-08 G-Track Corporation System and method for near-field electromagnetic ranging
WO2008112765A1 (en) * 2007-03-15 2008-09-18 Compass Auto Tracker Llc An apparatus and method for a directional finder
US8774837B2 (en) 2011-04-30 2014-07-08 John Anthony Wright Methods, systems and apparatuses of emergency vehicle locating and the disruption thereof

Also Published As

Publication number Publication date
US2215781A (en) 1940-09-24
NL50131C (de)
US2213273A (en) 1940-09-03
CH207367A (de) 1939-10-31
CH223333A (de) 1942-09-15
GB484590A (en) 1938-05-06
FR828300A (fr) 1938-05-13

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