Ambiguity Resolution with Precise Point Positioning

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dc.contributor.advisorGao, Yang
dc.contributor.authorWang, Min
dc.date.accessioned2014-06-26T21:23:14Z
dc.date.available2015-06-27T07:00:34Z
dc.date.issued2014-06-26
dc.date.submitted2014en
dc.description.abstractAmbiguity resolution with PPP aims at effectively reducing the long convergence time. The research in this dissertation explores its potential for both dual-frequency signals and triple-frequency signals. One of the most popular PPP ambiguity resolution strategies with dual-frequency GNSS signals is to first fix the L1/L2 wide-lane ambiguities in the geometry-free approach and then fix the L1 ambiguities in the geometry-based approach. A software package has been developed to evaluate the PPP ambiguity resolution performance with this strategy, including position accuracy, time-to-first-fix and fixing availability of both L1/L2 wide-lane ambiguity and L1 ambiguity, etc. A new model has been developed to improve the performance of PPP ambiguity resolution with dual-frequency signals, in which the L1 fractional bias is split into one direction-independent and three directional-dependent components for each satellite. Better performance can be obtained at both server and client rover side using the new model, but the L1 ambiguity fixing time still requires around 30 minutes on average. A new method of instantaneous PPP ambiguity resolution with triple-frequency signals has been proposed, which involves first fixing the L2/L5 wide-lane ambiguities in geometry-free approach and then fixing the L1/L2 wide-lane ambiguities in geometry-based approach. Based on the test results with extensive MATLAB simulation datasets and newly available BeiDou real signal datasets, both L2/L5 wide-lane ambiguity and L1/L2 wide-lane ambiguity can be fixed instantaneously and reliably using a single epoch of triple-frequency measurements. A carrier smooth carrier technique has been proposed to reduce the measurement noise for PPP ambiguity resolution with triple-frequency signals. PPP can achieve horizontal positioning accuracy better than 5 cm and 3D positioning accuracy better than 10 cm, with the convergence time less than two minutes. This performance is comparable to RTK.en_US
dc.description.embargoterms12 monthsen_US
dc.identifier.citationWang, M. (2014). Ambiguity Resolution with Precise Point Positioning (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/24782en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/24782
dc.identifier.urihttp://hdl.handle.net/11023/1586
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectGeodesy
dc.subjectGeotechnology
dc.subject.classificationGNSSen_US
dc.subject.classificationPrecise Point Positioningen_US
dc.subject.classificationAmbiguity Resolutionen_US
dc.subject.classificationBeiDouen_US
dc.subject.classificationTriple-frequencyen_US
dc.titleAmbiguity Resolution with Precise Point Positioning
dc.typedoctoral thesis
thesis.degree.disciplineGeomatics Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
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