SE8800069L - Radar systems - Google Patents

Radar systems

Info

Publication number
SE8800069L
SE8800069L SE8800069A SE8800069A SE8800069L SE 8800069 L SE8800069 L SE 8800069L SE 8800069 A SE8800069 A SE 8800069A SE 8800069 A SE8800069 A SE 8800069A SE 8800069 L SE8800069 L SE 8800069L
Authority
SE
Sweden
Prior art keywords
sample point
tracking
functions
height
search
Prior art date
Application number
SE8800069A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8800069D0 (en
Inventor
Nigel Charles Trueman Coote
Original Assignee
Marconi Gec Ltd
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 Marconi Gec Ltd filed Critical Marconi Gec Ltd
Publication of SE8800069D0 publication Critical patent/SE8800069D0/en
Publication of SE8800069L publication Critical patent/SE8800069L/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
    • G01S13/06—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
    • G01S13/103—Systems for measuring distance only using transmission of interrupted, pulse modulated waves particularities of the measurement of the distance
    • 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
    • G01S13/66—Radar-tracking systems; Analogous systems
    • G01S13/70—Radar-tracking systems; Analogous systems for range tracking only

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

A radar system for altitude determination comprises a pulsed radar transmitter and receiver having means for adjusting the transmitted pulse width and receiver bandwidth as functions of a detectable search/track height, and means for varying the value of a bias factor relating to an equilibrium tracking condition and for varying count boundaries of a status counter for an integration relating to a tracking lock condition as functions of the detected search/track height whereby the sensitivity of the radar system is improved over conventional altimeters at higher altitudes. The tracking loop determines whether the average power detected at a "signal" sample point (which, in the steady state, will be on the leading edge of the echo) exceeds the power at a "noise" sample point by the height-dependent bias factor. The lock indicator monitors power at a further, "status", sample point. <IMAGE>
SE8800069A 1986-04-17 1988-01-12 Radar systems SE8800069L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8609448A GB2281164B (en) 1986-04-17 1986-04-17 Radar systems for altitude determination

Publications (2)

Publication Number Publication Date
SE8800069D0 SE8800069D0 (en) 1988-01-12
SE8800069L true SE8800069L (en) 1994-12-28

Family

ID=10596393

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8800069A SE8800069L (en) 1986-04-17 1988-01-12 Radar systems

Country Status (3)

Country Link
DE (1) DE3736055A1 (en)
GB (1) GB2281164B (en)
SE (1) SE8800069L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10039943A1 (en) * 2000-08-16 2002-02-28 Adc Automotive Dist Control Method for operating a radar system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189895A (en) * 1955-06-13 1965-06-15 Westinghouse Electric Corp Automatic range tracking device
GB2029152A (en) * 1978-07-12 1980-03-12 Secr Defence Radio altimeter with variable beam width

Also Published As

Publication number Publication date
GB2281164A (en) 1995-02-22
DE3736055A1 (en) 1995-01-05
GB8609448D0 (en) 1994-09-21
GB2281164B (en) 1995-06-21
SE8800069D0 (en) 1988-01-12

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