NO873301L - FremgangsmŸte og anordning for mŸling av distanser. - Google Patents

FremgangsmŸte og anordning for mŸling av distanser.

Info

Publication number
NO873301L
NO873301L NO873301A NO873301A NO873301L NO 873301 L NO873301 L NO 873301L NO 873301 A NO873301 A NO 873301A NO 873301 A NO873301 A NO 873301A NO 873301 L NO873301 L NO 873301L
Authority
NO
Norway
Prior art keywords
signal
transponder
phase
transmitter
pct
Prior art date
Application number
NO873301A
Other languages
English (en)
Other versions
NO873301D0 (no
Inventor
Bengt Hane
Original Assignee
Stiftelsen Inst Mikrovags
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 Stiftelsen Inst Mikrovags filed Critical Stiftelsen Inst Mikrovags
Publication of NO873301L publication Critical patent/NO873301L/no
Publication of NO873301D0 publication Critical patent/NO873301D0/no

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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/84—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted for distance determination by phase measurement

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)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Length-Measuring Devices Using Wave Or Particle Radiation (AREA)

Abstract

Fremgangsmåte for å måle distansen mellom et første objekt, som Innbefatter en sender-mottakerenhet, og et andre objekt, som Innbefatter en transponder. I henhold til oppfinnelsen sendes der fra sender-mottakerenheten (19) et første mikrobølgeslgnal (Sl), som mottas 1 transponderen (18). Et andre signal (S3) av slik lavere frekvens Fm genereres 1 transponderen og moduleres på et signal (S6) av mlkrobølgefrekvens 1 transponderen til å sende et modulert signal (S7). Det modulerte signalet (S7) sendes fra transponderen til sender-mottakerenheten (19), hvor det mottas bg blandes ned med det første signalet (Sl) og deretter a) lavpassfUtreres til å danne et første målesignal (S10) som har frekvensen Fm, hvis fase tilsvarer fase-dlfferansen mellom det første mlkrobølgeslgnalet (Sl) og mlkrobølgeslgnalet (S8) som mottas 1 sender-mottakerenheten (19) og b) demoduleres, for derved å danne et andre målesignal (S12) som har frekvensen Fm, hvis fase tilsvarer fasen for det andre signalet (S3) generert 1 transponderen (18). Fasene for de to måleslgnalene (S10, S12) sammenlignes 1 fasesammen-1 lgnlngskretsen (27) til å danne en differanse deri-mellom, Idet denne differanse er proporsjonal med. distansen mellom objekt
NO873301A 1985-12-12 1987-08-06 Fremgangsmaate og anordning for maaling av distanser. NO873301D0 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8505888A SE456118B (sv) 1985-12-12 1985-12-12 Forfarande och anordning for att meta avstand mellan ett forsta och ett andra foremal med signaler av mikrovagsfrekvens
PCT/SE1986/000568 WO1987003698A1 (en) 1985-12-12 1986-12-11 A method and apparatus for measuring distances

Publications (2)

Publication Number Publication Date
NO873301L true NO873301L (no) 1987-08-06
NO873301D0 NO873301D0 (no) 1987-08-06

Family

ID=20362444

Family Applications (1)

Application Number Title Priority Date Filing Date
NO873301A NO873301D0 (no) 1985-12-12 1987-08-06 Fremgangsmaate og anordning for maaling av distanser.

Country Status (8)

Country Link
US (1) US4804961A (no)
EP (1) EP0249638B1 (no)
JP (1) JPS63501981A (no)
AT (1) ATE67864T1 (no)
DE (1) DE3681734D1 (no)
NO (1) NO873301D0 (no)
SE (1) SE456118B (no)
WO (1) WO1987003698A1 (no)

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Also Published As

Publication number Publication date
EP0249638A1 (en) 1987-12-23
SE8505888L (sv) 1987-06-13
SE456118B (sv) 1988-09-05
SE8505888D0 (sv) 1985-12-12
DE3681734D1 (de) 1991-10-31
ATE67864T1 (de) 1991-10-15
WO1987003698A1 (en) 1987-06-18
NO873301D0 (no) 1987-08-06
JPS63501981A (ja) 1988-08-04
EP0249638B1 (en) 1991-09-25
US4804961A (en) 1989-02-14

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