NL79494C - - Google Patents

Info

Publication number
NL79494C
NL79494C NL79494DA NL79494C NL 79494 C NL79494 C NL 79494C NL 79494D A NL79494D A NL 79494DA NL 79494 C NL79494 C NL 79494C
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 NL79494C publication Critical patent/NL79494C/xx

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50Systems of measurement based on relative movement of target
    • G01S13/52Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
    • G01S13/534Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi based upon amplitude or phase shift resulting from movement of objects, with reference to the surrounding clutter echo signal, e.g. non coherent MTi, clutter referenced MTi, externally coherent MTi
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S1/00Beacons 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
    • G01S1/02Beacons 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50Systems of measurement based on relative movement of target
    • G01S13/52Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
NL79494D 1941-03-05 NL79494C (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US381839A US2570203A (en) 1941-03-05 1941-03-05 Distance finding system with means to eliminate selected indications

Publications (1)

Publication Number Publication Date
NL79494C true NL79494C (es)

Family

ID=23506580

Family Applications (1)

Application Number Title Priority Date Filing Date
NL79494D NL79494C (es) 1941-03-05

Country Status (5)

Country Link
US (1) US2570203A (es)
BE (1) BE465776A (es)
FR (1) FR932930A (es)
GB (1) GB577855A (es)
NL (1) NL79494C (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714205A (en) * 1945-03-24 1955-07-26 Grayson Harry Radar apparatus for distinguishing between moving and stationary objects
US3078458A (en) * 1953-04-29 1963-02-19 Philco Corp Clutter elimination system
US3074048A (en) * 1959-03-20 1963-01-15 Raytheon Co Signal delay systems

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2143035A (en) * 1935-09-30 1939-01-10 Submarine Signal Co Distance measuring apparatus
NL86272B (es) * 1936-06-20
US2231929A (en) * 1937-04-29 1941-02-18 Sperry Gyroscope Co Inc Tridimensional radio direction indicator
GB500588A (en) * 1937-08-13 1939-02-13 Marconi Wireless Telegraph Co Improvements in or relating to radio apparatus for detecting aircraft
US2227057A (en) * 1937-12-08 1940-12-31 Emi Ltd Radio receiver
US2310692A (en) * 1939-06-16 1943-02-09 Rca Corp Method of and means for reducing multiple signals
NL60724C (es) * 1939-06-24

Also Published As

Publication number Publication date
FR932930A (fr) 1948-04-06
GB577855A (en) 1946-06-04
BE465776A (es)
US2570203A (en) 1951-10-09

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