NL174989C - METHOD FOR Suppressing UNWANTED SIGNALS IN A DOPPLER RADAR, OPERATING WITH A PULSE REDUCTION FREQUENCY SHIFT - Google Patents

METHOD FOR Suppressing UNWANTED SIGNALS IN A DOPPLER RADAR, OPERATING WITH A PULSE REDUCTION FREQUENCY SHIFT

Info

Publication number
NL174989C
NL174989C NL7006335A NL7006335A NL174989C NL 174989 C NL174989 C NL 174989C NL 7006335 A NL7006335 A NL 7006335A NL 7006335 A NL7006335 A NL 7006335A NL 174989 C NL174989 C NL 174989C
Authority
NL
Netherlands
Prior art keywords
operating
frequency shift
doppler radar
unwanted signals
reduction frequency
Prior art date
Application number
NL7006335A
Other languages
Dutch (nl)
Other versions
NL174989B (en
NL7006335A (en
Original Assignee
Ericsson Telefon Ab L M
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 by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of NL7006335A publication Critical patent/NL7006335A/xx
Publication of NL174989B publication Critical patent/NL174989B/en
Application granted granted Critical
Publication of NL174989C publication Critical patent/NL174989C/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
    • G01S13/00—Systems 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524—Discriminating 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
    • G01S13/526—Discriminating 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 performing filtering on the whole spectrum without loss of range information, e.g. using delay line cancellers or comb filters
    • G01S13/528—Discriminating 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 performing filtering on the whole spectrum without loss of range information, e.g. using delay line cancellers or comb filters with elimination of blind speeds

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)
  • Optical Radar Systems And Details Thereof (AREA)
NL7006335A 1969-05-09 1970-04-29 METHOD FOR Suppressing UNWANTED SIGNALS IN A DOPPLER RADAR, OPERATING WITH A PULSE REDUCTION FREQUENCY SHIFT NL174989C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE657869A SE330918B (en) 1969-05-09 1969-05-09

Publications (3)

Publication Number Publication Date
NL7006335A NL7006335A (en) 1970-11-11
NL174989B NL174989B (en) 1984-04-02
NL174989C true NL174989C (en) 1984-09-03

Family

ID=20269057

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7006335A NL174989C (en) 1969-05-09 1970-04-29 METHOD FOR Suppressing UNWANTED SIGNALS IN A DOPPLER RADAR, OPERATING WITH A PULSE REDUCTION FREQUENCY SHIFT

Country Status (8)

Country Link
JP (1) JPS508637B1 (en)
CH (1) CH507522A (en)
DE (1) DE2022234B2 (en)
FR (1) FR2042527B1 (en)
GB (1) GB1306961A (en)
NL (1) NL174989C (en)
NO (1) NO123045B (en)
SE (1) SE330918B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3110279C2 (en) * 1981-03-17 1984-01-19 Siemens AG, 1000 Berlin und 8000 München Pulse Doppler radar device with adjustable pulse repetition rate
US6049302A (en) * 1999-05-04 2000-04-11 Boeing North American Pulsed doppler radar system with small intermediate frequency filters

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124761A (en) * 1964-03-10 Circuit
US3155973A (en) * 1956-06-13 1964-11-03 Westinghouse Electric Corp Multiple pulse repetition frequency automatic range tracking pulse doppler radar
FR1392158A (en) * 1963-05-16 1965-03-12 Lab For Electronics Improvements to Doppler-fizeau radar devices
FR1527999A (en) * 1967-04-21 1968-06-07 Csf Improvement in fixed echo elimination devices

Also Published As

Publication number Publication date
GB1306961A (en) 1973-02-14
DE2022234A1 (en) 1970-11-19
FR2042527B1 (en) 1974-07-12
JPS508637B1 (en) 1975-04-05
FR2042527A1 (en) 1971-02-12
SE330918B (en) 1970-12-07
CH507522A (en) 1971-05-15
NO123045B (en) 1971-09-20
NL174989B (en) 1984-04-02
NL7006335A (en) 1970-11-11
DE2022234B2 (en) 1972-07-27

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee