WO2007016474A3 - Method and apparatus for reconstructing time of transit from assisted or weak signal gps observations - Google Patents

Method and apparatus for reconstructing time of transit from assisted or weak signal gps observations Download PDF

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Publication number
WO2007016474A3
WO2007016474A3 PCT/US2006/029702 US2006029702W WO2007016474A3 WO 2007016474 A3 WO2007016474 A3 WO 2007016474A3 US 2006029702 W US2006029702 W US 2006029702W WO 2007016474 A3 WO2007016474 A3 WO 2007016474A3
Authority
WO
WIPO (PCT)
Prior art keywords
transit
assisted
weak signal
signal gps
gps observations
Prior art date
Application number
PCT/US2006/029702
Other languages
French (fr)
Other versions
WO2007016474A9 (en
WO2007016474A2 (en
Inventor
Eamonn Glennon
Roderick Bryant
Original Assignee
Signav Pty Ltd
Rubenstein Allen I
Eamonn Glennon
Roderick Bryant
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 Signav Pty Ltd, Rubenstein Allen I, Eamonn Glennon, Roderick Bryant filed Critical Signav Pty Ltd
Priority to CA002617142A priority Critical patent/CA2617142A1/en
Priority to EP06788960A priority patent/EP1949126A4/en
Priority claimed from US11/460,784 external-priority patent/US20070024500A1/en
Publication of WO2007016474A2 publication Critical patent/WO2007016474A2/en
Publication of WO2007016474A9 publication Critical patent/WO2007016474A9/en
Publication of WO2007016474A3 publication Critical patent/WO2007016474A3/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
    • G01S19/25—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

Abstract

The invention provides a GPS device that resolves timing errors as applicable to an AGPS navigation solution. A single state algorithm provides rapid convergence, typical with standard Newton-Raphson performance. Problems due to ill-conditioning of the input matrix are identified by an augmented DOP calculation procedure, which may be used to identify unreliable results or to estimate the errors for those results.
PCT/US2006/029702 2005-07-29 2006-07-28 Method and apparatus for reconstructing time of transit from assisted or weak signal gps observations WO2007016474A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002617142A CA2617142A1 (en) 2005-07-29 2006-07-28 Method and apparatus for reconstructing time of transit from assisted or weak signal gps observations
EP06788960A EP1949126A4 (en) 2005-07-29 2006-07-28 Method and apparatus for reconstructing time of transit from assisted or weak signal gps observations

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US70363705P 2005-07-29 2005-07-29
US60/703,637 2005-07-29
US11/460,784 2006-07-28
US11/460,784 US20070024500A1 (en) 2005-07-29 2006-07-28 Method and apparatus for reconstructing time of transmit from assisted or weak signal gps observations

Publications (3)

Publication Number Publication Date
WO2007016474A2 WO2007016474A2 (en) 2007-02-08
WO2007016474A9 WO2007016474A9 (en) 2007-04-19
WO2007016474A3 true WO2007016474A3 (en) 2007-06-07

Family

ID=37709274

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/029702 WO2007016474A2 (en) 2005-07-29 2006-07-28 Method and apparatus for reconstructing time of transit from assisted or weak signal gps observations

Country Status (3)

Country Link
EP (1) EP1949126A4 (en)
CA (1) CA2617142A1 (en)
WO (1) WO2007016474A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8190536B2 (en) 2008-09-10 2012-05-29 King Fahd University Of Petroleum & Minerals Method of performing parallel search optimization

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010018663A1 (en) * 1996-10-24 2001-08-30 Dussell William O. Position based personal digital assistant
US6633621B1 (en) * 2000-03-20 2003-10-14 Motorola, Inc. Apparatus and method for synchronizing a clock using a phase-locked loop circuit
US20040057505A1 (en) * 2000-04-07 2004-03-25 Harri Valio Global positioning system code phase detector with multipath compensation and method for reducing multipath components associated with a received signal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6215442B1 (en) * 1997-02-03 2001-04-10 Snaptrack, Inc. Method and apparatus for determining time in a satellite positioning system
US6072428A (en) * 1998-06-03 2000-06-06 Trimble Navigation Limited Location determination using doppler and pseudorange measurements from fewer than four satellites

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010018663A1 (en) * 1996-10-24 2001-08-30 Dussell William O. Position based personal digital assistant
US6633621B1 (en) * 2000-03-20 2003-10-14 Motorola, Inc. Apparatus and method for synchronizing a clock using a phase-locked loop circuit
US20040057505A1 (en) * 2000-04-07 2004-03-25 Harri Valio Global positioning system code phase detector with multipath compensation and method for reducing multipath components associated with a received signal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1949126A4 *

Also Published As

Publication number Publication date
EP1949126A4 (en) 2010-09-29
WO2007016474A9 (en) 2007-04-19
EP1949126A2 (en) 2008-07-30
WO2007016474A2 (en) 2007-02-08
CA2617142A1 (en) 2007-02-08

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