SE8401315D0 - radio navigation - Google Patents

radio navigation

Info

Publication number
SE8401315D0
SE8401315D0 SE8401315A SE8401315A SE8401315D0 SE 8401315 D0 SE8401315 D0 SE 8401315D0 SE 8401315 A SE8401315 A SE 8401315A SE 8401315 A SE8401315 A SE 8401315A SE 8401315 D0 SE8401315 D0 SE 8401315D0
Authority
SE
Sweden
Prior art keywords
register
carrier wave
multiplier
pseudo noise
shift register
Prior art date
Application number
SE8401315A
Other languages
Swedish (sv)
Other versions
SE8401315L (en
SE457833B (en
Inventor
Bengt Harry Bjorkman
Original Assignee
Bengt Harry Bjorkman
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 Bengt Harry Bjorkman filed Critical Bengt Harry Bjorkman
Priority to SE8401315A priority Critical patent/SE457833B/en
Publication of SE8401315D0 publication Critical patent/SE8401315D0/en
Publication of SE8401315L publication Critical patent/SE8401315L/en
Publication of SE457833B publication Critical patent/SE457833B/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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location

Abstract

The type of transmitter used is of the broad band type, and comprises a local oscillator (10) and one stable (11), and a back-coupled shift register or so-called pseudo noise register controlled by the stable oscillator (11). A multiplier (13) partly receives the carrier wave from the local oscillator and partly the pulse signal from the pseudo noise register. An amplifier (14), and an aerial (15) for transmission of the phase-modulated signals produced by the multiplier are also provided. The oscillator frequency can be from 1-30 MHz and the pseudo noise shift register frequency can be 0.1 MHz, giving a pulse length of 10 micro-seconds. The shift register produces a pseudo-random pulse sequence of alternating positive and negative pulses. In the multiplier are multiplied the produced carrier wave and the PN register pulse sequence, the positive signal from the register signifying that the carrier wave is unaltered, whilst the negative signal shows that the carrier wave has been phase-switched through 180 degrees. (Provisional Basic advised week 85/44)
SE8401315A 1984-03-09 1984-03-09 Radio navigation system with coordination fixing SE457833B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8401315A SE457833B (en) 1984-03-09 1984-03-09 Radio navigation system with coordination fixing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8401315A SE457833B (en) 1984-03-09 1984-03-09 Radio navigation system with coordination fixing

Publications (3)

Publication Number Publication Date
SE8401315D0 true SE8401315D0 (en) 1984-03-09
SE8401315L SE8401315L (en) 1985-09-10
SE457833B SE457833B (en) 1989-01-30

Family

ID=20355073

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8401315A SE457833B (en) 1984-03-09 1984-03-09 Radio navigation system with coordination fixing

Country Status (1)

Country Link
SE (1) SE457833B (en)

Also Published As

Publication number Publication date
SE8401315L (en) 1985-09-10
SE457833B (en) 1989-01-30

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