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GB1526689A - Digital compensator for transmitter instability in mti radar systems - Google Patents

Digital compensator for transmitter instability in mti radar systems

Info

Publication number
GB1526689A
GB1526689A GB3129177A GB3129177A GB1526689A GB 1526689 A GB1526689 A GB 1526689A GB 3129177 A GB3129177 A GB 3129177A GB 3129177 A GB3129177 A GB 3129177A GB 1526689 A GB1526689 A GB 1526689A
Authority
GB
United Kingdom
Prior art keywords
signals
digital
phase
responsive
receiver
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
GB3129177A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to GB3129177A priority Critical patent/GB1526689A/en
Priority to DE19772733871 priority patent/DE2733871A1/en
Publication of GB1526689A publication Critical patent/GB1526689A/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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/288—Coherent receivers
    • 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

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)

Abstract

1526689 Pulse radar INTERNATIONAL STANDARD ELECTRIC CORP 26 July 1977 31291/77 Heading H4D An MTI radar system, with a digital compensator for transmitter instability, comprises a receiver 208 responsive to echo signals and including phase detectors 209, 210 providing in-phase and quadrature signals Is, Q s , a receiver 219 responsive to samples of the transmitted pulses and including phase detectors 220, 221 providing in-phase and quadrature signals Im, Qm, digitizing means 213 for the signals I s Q s , Im, Qm, and compensating means 214 including digital arithmetic computing means for solving Ic = I s Im + Q s Qm and Qc = I s Qm - Q s Im. Ic and Qc are "normalized" to remove amplitude fluctuations and signals I'c, Q'c pass to a known DMTI canceller 215, which correlates the digital values for a succession of range bins in one pulse repetition interval with those of the next, so that stationary target signals may be cancelled.
GB3129177A 1977-07-26 1977-07-26 Digital compensator for transmitter instability in mti radar systems Expired GB1526689A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3129177A GB1526689A (en) 1977-07-26 1977-07-26 Digital compensator for transmitter instability in mti radar systems
DE19772733871 DE2733871A1 (en) 1977-07-26 1977-07-27 RADAR WITH DIGITAL FIXED MARK SUPPRESSION

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3129177A GB1526689A (en) 1977-07-26 1977-07-26 Digital compensator for transmitter instability in mti radar systems
DE19772733871 DE2733871A1 (en) 1977-07-26 1977-07-27 RADAR WITH DIGITAL FIXED MARK SUPPRESSION

Publications (1)

Publication Number Publication Date
GB1526689A true GB1526689A (en) 1978-09-27

Family

ID=25772405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3129177A Expired GB1526689A (en) 1977-07-26 1977-07-26 Digital compensator for transmitter instability in mti radar systems

Country Status (2)

Country Link
DE (1) DE2733871A1 (en)
GB (1) GB1526689A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126032A3 (en) * 1983-05-04 1987-05-27 Selenia Industrie Elettroniche Associate S.P.A. Device for the identification and suppression of unwanted second trace echoes in radar systems
EP0287629A4 (en) * 1986-09-29 1990-01-08 Signatron Signal source distortion compensator.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126032A3 (en) * 1983-05-04 1987-05-27 Selenia Industrie Elettroniche Associate S.P.A. Device for the identification and suppression of unwanted second trace echoes in radar systems
EP0287629A4 (en) * 1986-09-29 1990-01-08 Signatron Signal source distortion compensator.

Also Published As

Publication number Publication date
DE2733871A1 (en) 1979-02-15

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19970725