FR2400212A1 - PULSE DOPPLER RADAR FILTER - Google Patents

PULSE DOPPLER RADAR FILTER

Info

Publication number
FR2400212A1
FR2400212A1 FR7822113A FR7822113A FR2400212A1 FR 2400212 A1 FR2400212 A1 FR 2400212A1 FR 7822113 A FR7822113 A FR 7822113A FR 7822113 A FR7822113 A FR 7822113A FR 2400212 A1 FR2400212 A1 FR 2400212A1
Authority
FR
France
Prior art keywords
pulse doppler
doppler radar
filters
signals
radar filter
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.)
Granted
Application number
FR7822113A
Other languages
French (fr)
Other versions
FR2400212B1 (en
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 FR2400212A1 publication Critical patent/FR2400212A1/en
Application granted granted Critical
Publication of FR2400212B1 publication Critical patent/FR2400212B1/fr
Granted 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

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)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Surgical Instruments (AREA)
  • Sheet Holders (AREA)
  • Electrotherapy Devices (AREA)

Abstract

L'invention concerne les filtres destinés à retirer les signaux parasites des signaux radar. Elle se rapporte à un filtre destiné à un récepteur de signaux radar et comprenant, entre deux filtres numériques DF1 et DF4, MF, un circuit HK qui traite les signaux parasites de deux plages de vitesses afin qu'ils soient supprimés par l'un ou l'autre des deux filtres. Application aux radars Doppler à impulsions.The invention relates to filters for removing spurious signals from radar signals. It relates to a filter intended for a radar signal receiver and comprising, between two digital filters DF1 and DF4, MF, a HK circuit which processes the parasitic signals of two speed ranges so that they are suppressed by one or more the other of the two filters. Application to pulse Doppler radars.

FR7822113A 1977-08-12 1978-07-26 PULSE DOPPLER RADAR FILTER Granted FR2400212A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7709119A SE409148B (en) 1977-08-12 1977-08-12 FILTER DEVICE INCLUDED IN THE RECEIVER OF A PULSE DOPPER RADAR

Publications (2)

Publication Number Publication Date
FR2400212A1 true FR2400212A1 (en) 1979-03-09
FR2400212B1 FR2400212B1 (en) 1984-12-28

Family

ID=20331986

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7822113A Granted FR2400212A1 (en) 1977-08-12 1978-07-26 PULSE DOPPLER RADAR FILTER

Country Status (10)

Country Link
CH (1) CH632850A5 (en)
DE (1) DE2833050C2 (en)
DK (1) DK147428C (en)
FI (1) FI65863C (en)
FR (1) FR2400212A1 (en)
GB (1) GB2002617B (en)
IT (1) IT1098359B (en)
NL (1) NL187872C (en)
NO (1) NO145964C (en)
SE (1) SE409148B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632420B1 (en) * 1987-10-16 1990-10-12 Thomson Csf METHOD AND DEVICE FOR COMPENSATING THE SPEED OF CLOUD IN A COHERENT DOPPLER RADAR AT AMBIGUOUS VARIABLE SPEED
DE19654769A1 (en) * 1996-12-30 1998-07-02 Teves Gmbh Alfred Method and device for vehicle control or regulation
US6049302A (en) * 1999-05-04 2000-04-11 Boeing North American Pulsed doppler radar system with small intermediate frequency filters
GB0301614D0 (en) * 2003-01-24 2013-05-08 Qinetiq Ltd Target visibility enhancement system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2130388A1 (en) * 1971-03-17 1972-11-03 Int Standard Electric Corp
US3742500A (en) * 1970-08-24 1973-06-26 Raytheon Co Mti radar
US3962704A (en) * 1974-05-31 1976-06-08 Hughes Aircraft Company Moving target indicator clutter tracker
US4035799A (en) * 1975-11-04 1977-07-12 The United States Of America As Represented By The Secretary Of The Navy Digital mean clutter doppler compensation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742500A (en) * 1970-08-24 1973-06-26 Raytheon Co Mti radar
FR2130388A1 (en) * 1971-03-17 1972-11-03 Int Standard Electric Corp
US3962704A (en) * 1974-05-31 1976-06-08 Hughes Aircraft Company Moving target indicator clutter tracker
US4035799A (en) * 1975-11-04 1977-07-12 The United States Of America As Represented By The Secretary Of The Navy Digital mean clutter doppler compensation system

Also Published As

Publication number Publication date
NL7808152A (en) 1979-02-14
DK147428C (en) 1985-02-11
FR2400212B1 (en) 1984-12-28
FI782352A (en) 1979-02-13
NL187872B (en) 1991-09-02
DK356178A (en) 1979-02-13
FI65863B (en) 1984-03-30
IT1098359B (en) 1985-09-07
GB2002617B (en) 1982-02-10
DE2833050C2 (en) 1986-08-07
SE409148B (en) 1979-07-30
IT7826665A0 (en) 1978-08-10
DE2833050A1 (en) 1979-03-01
NO145964B (en) 1982-03-22
NL187872C (en) 1992-02-03
GB2002617A (en) 1979-02-21
DK147428B (en) 1984-07-30
NO145964C (en) 1982-06-30
CH632850A5 (en) 1982-10-29
FI65863C (en) 1984-07-10
SE7709119L (en) 1979-02-13
NO782748L (en) 1979-02-13

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