Development and Assessment of a Seismic Waveform Capturing System using Precise Point Positioning with High-rate GNSS Observation

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dc.contributor.advisorGao, Yang
dc.contributor.advisorSideris, Michael G.
dc.contributor.authorJiang, Yang
dc.contributor.committeememberGao, Yang
dc.contributor.committeememberSideris, Michael G.
dc.contributor.committeememberCheng, Y. Frank
dc.contributor.committeememberRangelova, Elena V.
dc.date2021-06
dc.date.accessioned2021-02-01T15:40:13Z
dc.date.available2021-02-01T15:40:13Z
dc.date.issued2021-01-20
dc.description.abstractIt is of great significance to build a system for earthquake early warning (EEW) and rapid hazard assessment based on real-time seismic waveform capturing. A top-rated geodetic monitoring tool that is the Global Navigation Satellite Systems (GNSS) has been widely used to perform such a task. First, the relative GNSS positioning methodology of the real-time kinematics (RTK) provides high-accuracy trajectory estimations while it has weaknesses such as the influence of base station vibrations. Second, the absolute positioning technique of precise point positioning (PPP) is more suitable for earthquake scenarios, while it relies on accurate satellite products such as orbit and clock corrections. Although real-time free-access correction service is available, it remains unclear whether PPP's performance meets an earthquake capturing system's requirements. On the other hand, most current GNSS-based earthquake capturing systems provide temporal resolution of no greater than 10Hz, limiting the earthquake recording performance, especially for high-frequency seismic wave components up to 100Hz. Moreover, GNSS monitoring stations usually require a high budget for purchase and maintenance. However, the recently modernized GNSS constellations and the creation of cost-effective, high-performance GNSS receivers that are still evolving have created the potential for an affordable and accurate GNSS solution that can be used for seismic waveform capturing. In this thesis, a real-time earthquake capturing system is developed based on PPP with ambiguity resolution (PPPAR) using real-time correction service. As is designed, the system can support the processing of high-rate multi-frequency multi-constellation GNSS observations with sampling rate up to 100Hz. The high sampling rate allows for the extraction of high-frequency seismic wave components, which is important for earthquake detection and rapid assessment. The performance of the developed system has been assessed based on a simulation earthquake experiment with a cost-effective 100Hz GNSS receiver. The performance assessment includes the trajectory estimation accuracy, waveform property accuracy, and the sampling rate's impact. The analysis showed that the system software and algorithm are efficient and fully operational, while centimeter-level accuracy for the trajectory and waveform property is continuously achieved. Furthermore, a real-time earthquake capturing system with a higher sampling rate of GNSS observations can provide more accurate results.en_US
dc.identifier.citationJiang, Y. (2021). Development and Assessment of a Seismic Waveform Capturing System using Precise Point Positioning with High-rate GNSS Observation (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/38611
dc.identifier.urihttp://hdl.handle.net/1880/113048
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.subjectearthquake early warning (EEW)en_US
dc.subjectseismic waveform capturingen_US
dc.subjectreal-time precise point positioning with ambiguity resolution (PPPAR)en_US
dc.subjectmulti-GNSSen_US
dc.subjectcost-effective GNSSen_US
dc.subject.classificationGeodesyen_US
dc.titleDevelopment and Assessment of a Seismic Waveform Capturing System using Precise Point Positioning with High-rate GNSS Observationen_US
dc.typemaster thesisen_US
thesis.degree.disciplineEngineering – Geomaticsen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameMaster of Science (MSc)en_US
ucalgary.item.requestcopytrueen_US
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