GB1306961A - Circuits and methods for handling radar signals - Google Patents

Circuits and methods for handling radar signals

Info

Publication number
GB1306961A
GB1306961A GB2246370A GB2246370A GB1306961A GB 1306961 A GB1306961 A GB 1306961A GB 2246370 A GB2246370 A GB 2246370A GB 2246370 A GB2246370 A GB 2246370A GB 1306961 A GB1306961 A GB 1306961A
Authority
GB
United Kingdom
Prior art keywords
pulse
circuits
methods
radar signals
repetition frequency
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB2246370A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB1306961A publication Critical patent/GB1306961A/en
Expired legal-status Critical Current

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)

Abstract

1306961 Pulse radar TELEFONAKTIEBOLAGET L M ERICSSON 8 May 1970 [9 May 1969] 22463/70 Heading H4D In a pulse Doppler radar utilizing pulse repetition frequency shifting it is stated that signals due to fixed or slowly-moving targets may, due to such shifting, appear at the output of a or each Doppler filter in the receiver and that to avoid this the outputs of each filter are replaced for an interval immediately following the pulse repetition frequency shift by a signal which is constant, or zero, or exponentially decreasing.
GB2246370A 1969-05-09 1970-05-08 Circuits and methods for handling radar signals Expired GB1306961A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1306961A true GB1306961A (en) 1973-02-14

Family

ID=20269057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2246370A Expired GB1306961A (en) 1969-05-09 1970-05-08 Circuits and methods for handling radar signals

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
NL174989B (en) 1984-04-02
JPS508637B1 (en) 1975-04-05
NO123045B (en) 1971-09-20
NL7006335A (en) 1970-11-11
DE2022234A1 (en) 1970-11-19
SE330918B (en) 1970-12-07
NL174989C (en) 1984-09-03
FR2042527A1 (en) 1971-02-12
FR2042527B1 (en) 1974-07-12
CH507522A (en) 1971-05-15
DE2022234B2 (en) 1972-07-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee