WO2003081977A3 - Time determination in satellite positioning system receivers and methods therefor - Google Patents

Time determination in satellite positioning system receivers and methods therefor Download PDF

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Publication number
WO2003081977A3
WO2003081977A3 PCT/US2003/005677 US0305677W WO03081977A3 WO 2003081977 A3 WO2003081977 A3 WO 2003081977A3 US 0305677 W US0305677 W US 0305677W WO 03081977 A3 WO03081977 A3 WO 03081977A3
Authority
WO
WIPO (PCT)
Prior art keywords
time
positioning system
determining
satellite positioning
time determination
Prior art date
Application number
PCT/US2003/005677
Other languages
French (fr)
Other versions
WO2003081977A2 (en
Inventor
Thomas Michael King
George Jeffrey Geier
Rodney Patrick Landers
Michael Joseph Slade
Paul Declerck
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Priority to JP2003579533A priority Critical patent/JP2005521863A/en
Priority to KR1020047015285A priority patent/KR101068322B1/en
Priority to AU2003219887A priority patent/AU2003219887A1/en
Publication of WO2003081977A2 publication Critical patent/WO2003081977A2/en
Publication of WO2003081977A3 publication Critical patent/WO2003081977A3/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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
    • G01S19/235—Calibration of receiver components
    • 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
    • G01S5/0205—Details
    • G01S5/0221—Receivers
    • G01S5/02213—Receivers arranged in a network for determining the position of a transmitter
    • G01S5/02216—Timing or synchronisation of the receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/25—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
    • G01S19/256—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS relating to timing, e.g. time of week, code phase, timing offset
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal
    • G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
    • G04R20/06—Decoding time data; Circuits therefor
    • 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
    • G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S2205/001—Transmission of position information to remote stations
    • G01S2205/008—Transmission of position information to remote stations using a mobile telephone network

Abstract

Method in a Global Positioning System (GPS) receivers, including determining pseudorange (PNR) measurements for at least four satellites (210), determining a coarse time (220) corresponding to the pseudorange measurement, determining an offset time (240) between a periodic GPS event of one of the four satellites and the coarse time, determining a time correction delta (250) based upon the period of the Periodic GPS event, the offset time and the coarse time if an error of the coarse time is less than ½ the period of the periodic GPS event, and determining corrected time (260) based upon the coarse time and the time correction delta if the error of the coarse time is less than ½ the period of the periodic GPS event.
PCT/US2003/005677 2002-03-28 2003-02-24 Time determination in satellite positioning system receivers and methods therefor WO2003081977A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003579533A JP2005521863A (en) 2002-03-28 2003-02-24 Time determination at satellite positioning system receiver and method for it
KR1020047015285A KR101068322B1 (en) 2002-03-28 2003-02-24 Method of determining time in satellite positioning system receivers
AU2003219887A AU2003219887A1 (en) 2002-03-28 2003-02-24 Time determination in satellite positioning system receivers and methods therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/108,409 2002-03-28
US10/108,409 US6944540B2 (en) 2002-03-28 2002-03-28 Time determination in satellite positioning system receivers and methods therefor

Publications (2)

Publication Number Publication Date
WO2003081977A2 WO2003081977A2 (en) 2003-10-09
WO2003081977A3 true WO2003081977A3 (en) 2004-04-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/005677 WO2003081977A2 (en) 2002-03-28 2003-02-24 Time determination in satellite positioning system receivers and methods therefor

Country Status (7)

Country Link
US (1) US6944540B2 (en)
JP (1) JP2005521863A (en)
KR (2) KR101068322B1 (en)
CN (1) CN100397094C (en)
AU (1) AU2003219887A1 (en)
TW (1) TWI223534B (en)
WO (1) WO2003081977A2 (en)

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