NO123045B - - Google Patents

Download PDF

Info

Publication number
NO123045B
NO123045B NO176070A NO176070A NO123045B NO 123045 B NO123045 B NO 123045B NO 176070 A NO176070 A NO 176070A NO 176070 A NO176070 A NO 176070A NO 123045 B NO123045 B NO 123045B
Authority
NO
Norway
Prior art keywords
signal
pulse repetition
repetition frequency
prf
frequency change
Prior art date
Application number
NO176070A
Other languages
English (en)
Norwegian (no)
Inventor
L Sjoestroem
J Nordwall
B Sevedag
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 NO123045B publication Critical patent/NO123045B/no

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)
NO176070A 1969-05-09 1970-05-08 NO123045B (nl)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NO123045B true NO123045B (nl) 1971-09-20

Family

ID=20269057

Family Applications (1)

Application Number Title Priority Date Filing Date
NO176070A NO123045B (nl) 1969-05-09 1970-05-08

Country Status (8)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3110279C2 (de) * 1981-03-17 1984-01-19 Siemens AG, 1000 Berlin und 8000 München Puls-Doppler-Radargerät mit veränderbarer Pulsfolgefrequenz
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 (fr) * 1963-05-16 1965-03-12 Lab For Electronics Perfectionnements aux dispositifs de radar à effet doppler-fizeau
FR1527999A (fr) * 1967-04-21 1968-06-07 Csf Perfectionnement aux dispositifs d'élimination d'échos fixes

Also Published As

Publication number Publication date
FR2042527B1 (nl) 1974-07-12
CH507522A (de) 1971-05-15
SE330918B (nl) 1970-12-07
JPS508637B1 (nl) 1975-04-05
NL174989C (nl) 1984-09-03
DE2022234A1 (de) 1970-11-19
GB1306961A (en) 1973-02-14
NL7006335A (nl) 1970-11-11
DE2022234B2 (de) 1972-07-27
NL174989B (nl) 1984-04-02
FR2042527A1 (nl) 1971-02-12

Similar Documents

Publication Publication Date Title
US3701149A (en) Frequency averaging controlled false alarm rate (cfar) circuit
US5307069A (en) Improved radar receiver system
US3707718A (en) Radar system
US3480953A (en) Moving target indicator having staggered pulse repetition frequency
GB1300243A (en) Quantizer system for radar data processing
NO172821B (no) Krets for aa kansellere birefleks
US3786509A (en) Automatic canceller
US5291209A (en) Coherent side lobe canceler
US4155088A (en) Dual frequency transmission apparatus for frequency-agile radar systems utilizing MTI techniques
US4586048A (en) Sidelobe canceller
US3140489A (en) Frequency modulated pulse radar system
US3981013A (en) Non-jammable plural frequency radar system
US3141164A (en) Radar receiver utilizing narrow band filtering and multiplexing
NO123045B (nl)
US3011166A (en) Pulse doppler radar system
US2548779A (en) Moving target indication radar system
US3713153A (en) Pulse radar system for detecting moving targets
US3157875A (en) Moving target radar delay line filter
GB960849A (en) Improvements in or relating to radar systems
US3176296A (en) Pulse compression radar system
US4222049A (en) Circuit arrangement for eliminating fixed echoes in a pulse
US4434424A (en) Side lobe canceller for radar systems
US2788520A (en) Tuning assembly for a radar system
US5633643A (en) Method and device for signal-processing in a radar system
US3134101A (en) Moving target indicator