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WO2004040329A3 - System and method for estimating clock acceleration and location determination - Google Patents

System and method for estimating clock acceleration and location determination Download PDF

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Publication number
WO2004040329A3
WO2004040329A3 PCT/US2003/034454 US0334454W WO2004040329A3 WO 2004040329 A3 WO2004040329 A3 WO 2004040329A3 US 0334454 W US0334454 W US 0334454W WO 2004040329 A3 WO2004040329 A3 WO 2004040329A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
acceleration
clock
positioning
clock signal
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2003/034454
Other languages
French (fr)
Other versions
WO2004040329A2 (en
Inventor
Jesse Stone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSR Technology Inc
Original Assignee
Sirf Technology 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 Sirf Technology Inc filed Critical Sirf Technology Inc
Priority to AU2003287268A priority Critical patent/AU2003287268A1/en
Publication of WO2004040329A2 publication Critical patent/WO2004040329A2/en
Publication of WO2004040329A3 publication Critical patent/WO2004040329A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/29—Acquisition or tracking or demodulation of signals transmitted by the system carrier including Doppler, related

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

A method and a system for a location determination (a) acquire a first positioning signal; (b) analyze the first positioning signal to provide an estimate of a clock signal acceleration; (c) acquire additional positioning signals based on the estimate of the clock signal acceleration; and (d) perform the location determination using the first positioning signal and the additional positioning signals. The additional positioning signals may be acquired using a stacking technique. The first positioning signal may be acquired based on a signal-to-noise ratio exceeding a predetermined threshold. Clock signal acceleration may be estimated using a constant clock signal acceleration parametric model, which may be parabolic model based on a function that dwpends on the clock signal acceleration, a clock Doppler and an initial phase value. Alternatively, grids of various granularity may be searched clock signal acceleration space and a clock Doppler space in the vicinity of a clock Doppler value measured in the acquisition of the first positioning signal.
PCT/US2003/034454 2002-10-29 2003-10-29 System and method for estimating clock acceleration and location determination Ceased WO2004040329A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003287268A AU2003287268A1 (en) 2002-10-29 2003-10-29 System and method for estimating clock acceleration and location determination

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42222102P 2002-10-29 2002-10-29
US60/422,221 2002-10-29

Publications (2)

Publication Number Publication Date
WO2004040329A2 WO2004040329A2 (en) 2004-05-13
WO2004040329A3 true WO2004040329A3 (en) 2004-07-08

Family

ID=32230333

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/034454 Ceased WO2004040329A2 (en) 2002-10-29 2003-10-29 System and method for estimating clock acceleration and location determination

Country Status (2)

Country Link
AU (1) AU2003287268A1 (en)
WO (1) WO2004040329A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809064A (en) * 1990-11-28 1998-09-15 Novatel, Inc. Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators
US5969672A (en) * 1998-07-17 1999-10-19 Honeywell Inc. GPS signal fault isolation monitor
US6397146B1 (en) * 1999-11-29 2002-05-28 Litton Systems, Inc. Acceleration compensation in a GPS-inertial navigation system
US20020105458A1 (en) * 2001-02-06 2002-08-08 Koninklijke Philips Electronics N. V. Method of despreading GPS signals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809064A (en) * 1990-11-28 1998-09-15 Novatel, Inc. Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators
US5969672A (en) * 1998-07-17 1999-10-19 Honeywell Inc. GPS signal fault isolation monitor
US6397146B1 (en) * 1999-11-29 2002-05-28 Litton Systems, Inc. Acceleration compensation in a GPS-inertial navigation system
US20020105458A1 (en) * 2001-02-06 2002-08-08 Koninklijke Philips Electronics N. V. Method of despreading GPS signals

Also Published As

Publication number Publication date
WO2004040329A2 (en) 2004-05-13
AU2003287268A8 (en) 2004-05-25
AU2003287268A1 (en) 2004-05-25

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