WO2003001235A3 - Determining location information from sampled positioning signals - Google Patents

Determining location information from sampled positioning signals Download PDF

Info

Publication number
WO2003001235A3
WO2003001235A3 PCT/US2002/021178 US0221178W WO03001235A3 WO 2003001235 A3 WO2003001235 A3 WO 2003001235A3 US 0221178 W US0221178 W US 0221178W WO 03001235 A3 WO03001235 A3 WO 03001235A3
Authority
WO
WIPO (PCT)
Prior art keywords
value
estimate
delay
modulation frequency
magnitude
Prior art date
Application number
PCT/US2002/021178
Other languages
French (fr)
Other versions
WO2003001235A2 (en
Inventor
Anant Sahai
John Tsitsiklis
Roy Benjamin Van
Andrew Chou
Wallace Mann
Jesse R Stone
Wungkum Fong
Original Assignee
Enuvis Inc
Anant Sahai
John Tsitsiklis
Roy Benjamin Van
Andrew Chou
Wallace Mann
Jesse R Stone
Wungkum Fong
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 Enuvis Inc, Anant Sahai, John Tsitsiklis, Roy Benjamin Van, Andrew Chou, Wallace Mann, Jesse R Stone, Wungkum Fong filed Critical Enuvis Inc
Priority to AU2002349799A priority Critical patent/AU2002349799A1/en
Priority to EP02752163A priority patent/EP1449005B1/en
Priority to DE60231736T priority patent/DE60231736D1/en
Publication of WO2003001235A2 publication Critical patent/WO2003001235A2/en
Publication of WO2003001235A3 publication Critical patent/WO2003001235A3/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
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/30—Acquisition or tracking or demodulation of signals transmitted by the system code related

Abstract

According to one aspect of the invention, sampled data that is received from a receiver is divided into segments of data of increasing length. A current value range for a delay value and a current value range for a modulation frequency value are calculated relative to each signal source from a set of signal sources that are overhead the signal receiver. An estimate for the delay value and an estimate for the modulation frequency value are calculated by iteratively updating the current value range for the delay value and for the modulation frequency value. The iterative update of the current value range for the delay value and for the modulation frequency value is performed overthe set of signal sources and over the segments of data of increasing length. According to another aspect of the technique, for each signal source, I and Q correlation integrals and their magnitude value are calculated corresponding to the estimate of the modulation frequency value and the estimate of the delay value. In addition, for each signal source, I and Q correlation integrals and thier magnitude values are calculated corresponding to a set of delay values that surround the estimate of the delay value. A shape of a magnitude-curve is interpolated using the magnitude values corresponding to the estimate of the delay value and corresponding to the set of delay values that surround the estimate of the delay value. The location of the receiver is calculated using the shape of the magnitude-curve to represent the I and Q correlation integrals for each signal source.
PCT/US2002/021178 2001-06-22 2002-06-21 Determining location information from sampled positioning signals WO2003001235A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2002349799A AU2002349799A1 (en) 2001-06-22 2002-06-21 Determining location information from sampled positioning signals
EP02752163A EP1449005B1 (en) 2001-06-22 2002-06-21 Determining location information from sampled positioning signals
DE60231736T DE60231736D1 (en) 2001-06-22 2002-06-21 DETERMINING LOCAL INFORMATION OF LOCKED POSITIONING SIGNALS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/888,337 US6535163B1 (en) 2001-06-22 2001-06-22 Determining location information using sampled data containing location-determining signals and noise
US09/888,337 2001-06-22

Publications (2)

Publication Number Publication Date
WO2003001235A2 WO2003001235A2 (en) 2003-01-03
WO2003001235A3 true WO2003001235A3 (en) 2004-06-03

Family

ID=25392999

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/021178 WO2003001235A2 (en) 2001-06-22 2002-06-21 Determining location information from sampled positioning signals

Country Status (6)

Country Link
US (1) US6535163B1 (en)
EP (1) EP1449005B1 (en)
AT (1) ATE426821T1 (en)
AU (1) AU2002349799A1 (en)
DE (1) DE60231736D1 (en)
WO (1) WO2003001235A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7069019B2 (en) * 2001-09-08 2006-06-27 Sirf Technology, Inc. System and method to estimate the location of a receiver
US6873910B2 (en) * 2002-10-22 2005-03-29 Qualcomm Incorporated Procedure for searching for position determination signals using a plurality of search modes
FR2847101B1 (en) * 2002-11-08 2005-09-23 Thales Sa METHOD AND MODEM FOR SYNCHRONIZATION AND PHASE TRACKING
US7656348B2 (en) * 2006-05-19 2010-02-02 Qualcomm Incorporated System and/or method for determining sufficiency of pseudorange measurements
JP5109706B2 (en) * 2007-04-23 2012-12-26 セイコーエプソン株式会社 Positioning method and positioning device
US8217838B2 (en) 2008-03-20 2012-07-10 Skybitz, Inc. System and method for using data phase to reduce position ambiguities
SG11201907221XA (en) * 2017-02-09 2019-09-27 Univ Tokyo Position information processing system and position information processing apparatus

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US4578678A (en) * 1983-11-14 1986-03-25 The United States Of America As Represented By The United States National Aeronautics And Space Administration High dynamic global positioning system receiver
US5225842A (en) 1991-05-09 1993-07-06 Navsys Corporation Vehicle tracking system employing global positioning system (gps) satellites
US5327144A (en) * 1993-05-07 1994-07-05 Associated Rt, Inc. Cellular telephone location system
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US6133874A (en) 1996-03-08 2000-10-17 Snaptrack, Inc. Method and apparatus for acquiring satellite positioning system signals
US5945944A (en) 1996-03-08 1999-08-31 Snaptrack, Inc. Method and apparatus for determining time for GPS receivers
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US5920278A (en) * 1997-05-28 1999-07-06 Gregory D. Gibbons Method and apparatus for identifying, locating, tracking, or communicating with remote objects
US6134228A (en) * 1997-12-12 2000-10-17 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for determining the position of a mobile terminal in a CDMA mobile communications system
US5999124A (en) 1998-04-22 1999-12-07 Snaptrack, Inc, Satellite positioning system augmentation with wireless communication signals
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Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SAUR E: "EIN KREUZKORRELATIONS-EMPFAENGER MIT MINIMIERTEN SYSTEMATISCHEN MESSFEHLERBEITRAEGEN FUER DIE GEODAETISCHE PUNKTBESTIMMUNG MIT DEM GLOBAL POSITIONING SYSTEM", INAUGURAL-DISSERTATION ZUR ERLANGUNG DES DOKTORGRADES DER HOHEN MATHEMATISCH-NATURWISSENSCHAFTLICHEN FAKULTAET DER RHEINISCHEN FRIEDRICH-WILHELMUS-UNIVERSITAET ZU BONN, 1989, PAGE(S) 1-95, XP001061401 *

Also Published As

Publication number Publication date
EP1449005A2 (en) 2004-08-25
AU2002349799A1 (en) 2003-01-08
DE60231736D1 (en) 2009-05-07
US6535163B1 (en) 2003-03-18
WO2003001235A2 (en) 2003-01-03
EP1449005B1 (en) 2009-03-25
ATE426821T1 (en) 2009-04-15

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