SE8800788D0 - RADAR - Google Patents

RADAR

Info

Publication number
SE8800788D0
SE8800788D0 SE8800788A SE8800788A SE8800788D0 SE 8800788 D0 SE8800788 D0 SE 8800788D0 SE 8800788 A SE8800788 A SE 8800788A SE 8800788 A SE8800788 A SE 8800788A SE 8800788 D0 SE8800788 D0 SE 8800788D0
Authority
SE
Sweden
Prior art keywords
doppler
frequencies
band
time window
operates
Prior art date
Application number
SE8800788A
Other languages
Swedish (sv)
Inventor
P Tournois
Original Assignee
Thomson Csf
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 Thomson Csf filed Critical Thomson Csf
Publication of SE8800788D0 publication Critical patent/SE8800788D0/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
    • G01S13/53—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 a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar
    • G01S13/532—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 a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar using a bank of range gates or a memory matrix
    • 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
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/26—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
    • G01S13/28—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses
    • G01S13/284—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The radar signal processor includes one device (1) for separating frequencies inside a band, B, relative to each time window, using spectral analysis. A decoder (7') operates on pseudo-random phases carried by frequencies in the band. A Doppler filtering is performed on each of the frequencies separated by the first device. An adaptive filter operates on the decoded signals during a given time window, dependent upon each frequency of the Doppler filter. The Doppler filtering determines a Doppler resolution. The adaptive filter determines a distance resolution. The processor also includes a Fourier transformer.
SE8800788A 1987-03-06 1988-03-04 RADAR SE8800788D0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8703065A FR2751423A1 (en) 1987-03-06 1987-03-06 Processor for high recurrence frequency radar signal

Publications (1)

Publication Number Publication Date
SE8800788D0 true SE8800788D0 (en) 1988-03-04

Family

ID=9348675

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8800788A SE8800788D0 (en) 1987-03-06 1988-03-04 RADAR

Country Status (4)

Country Link
FR (1) FR2751423A1 (en)
GB (1) GB8804928D0 (en)
IT (1) IT8867114A0 (en)
SE (1) SE8800788D0 (en)

Also Published As

Publication number Publication date
GB8804928D0 (en) 1998-01-14
FR2751423A1 (en) 1998-01-23
IT8867114A0 (en) 1988-02-17

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