Low-Cost Real-Time Precise Point Positioning (PPP) Correction Service with High Availability and Accuracy

Simple item page
dc.contributor.advisorGao, Yang
dc.contributor.authorZhou, Peiyuan
dc.contributor.committeememberEl-Sheimy, Naser
dc.contributor.committeememberO'Keefe, Kyle P. G.
dc.contributor.committeememberSesay, Abu B.
dc.contributor.committeememberWang, Jinling
dc.date2020-06
dc.date.accessioned2020-04-29T20:24:43Z
dc.date.available2020-04-29T20:24:43Z
dc.date.issued2020-04-24
dc.description.abstractThanks to the availability of real-time state-space correction services, real-time Precise Point Positioning (PPP) is drawing increasing interests from various applications. However, the current real-time PPP correction services are mainly designed to support professional users using high-end GNSS systems. To support many emerging applications such as precise positioning with smartphones and self-driving cars which demand high availability and accuracy as well as high cost-effectiveness, such correction services must be improved. A low-cost real-time PPP correction service has been proposed which is based on an Improved Legacy Navigation message (ILNAV) to represent and disseminate real-time precise satellite orbit, clock, and code bias with improved availability and scalability. The ILNAV can provide real-time precise satellite orbit and clock corrections for up to two hours when correction outages occur. The update rates of the ILNAV are fully scalable to accommodate various requirements in terms of communication bandwidth and accuracy. The precise satellite Differential Code Bias (DCB) is estimated with Low-Earth Orbit (LEO) satellite onboard GPS observations, which is integrated into the ILNAV as Timing Group Delay (TGD) parameter to reduce the communication load of standalone code bias messages. Since the ILNAV provides fully consistent representation and user algorithms as the standard LNAV, it can also support convenient transitions from standard LNAV to ILNAV for improved positioning performance. To support low-cost GNSS users for further improved positioning accuracy and accelerated filter convergence, highly available and precise atmospheric corrections are estimated using real-time uncombined PPP and ILNAV. The Spherical Harmonic Function (SHF) model is used to represent global ionospheric Vertical Total Electron Content (VTEC) corrections, while the Slant Total Electron Content (STEC) map and polynomial model are developed for representing regional slant ionospheric and zenith wet tropospheric corrections, respectively. The low-cost real-time PPP correction service is evaluated with an application to Android Nexus 9 tablet and u-blox devices. The results demonstrate that submeter-level horizontal positioning accuracy can be achieved with the Android Nexus 9 tablet under favorable environments, while accuracy improvement to decimeter-level can be obtained using u-blox M8T/F9P receivers with a patch antenna.en_US
dc.identifier.citationZhou, P. (2020). Low-Cost Real-Time Precise Point Positioning (PPP) Correction Service with High Availability and Accuracy (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/37738
dc.identifier.urihttp://hdl.handle.net/1880/111922
dc.language.isoengen_US
dc.publisher.facultySchulich School of Engineeringen_US
dc.publisher.institutionUniversity of Calgaryen
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.en_US
dc.subjectSSRen_US
dc.subjectreal-time PPPen_US
dc.subjectILNAVen_US
dc.subjectDCBen_US
dc.subjectglobal ionospheric correctionsen_US
dc.subjectregional atmospheric correctionsen_US
dc.subject.classificationGeodesyen_US
dc.titleLow-Cost Real-Time Precise Point Positioning (PPP) Correction Service with High Availability and Accuracyen_US
dc.typedoctoral thesisen_US
thesis.degree.disciplineEngineering – Geomaticsen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameDoctor of Philosophy (PhD)en_US
ucalgary.item.requestcopytrueen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
ucalgary_2020_zhou_peiyuan.pdf
Size:
24.04 MB
Format:
Adobe Portable Document Format
Description:
Thesis
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
2.62 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Open Theses and Dissertations