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GNSS-PPP Navigation in Obstructed Environments Using a Chip-Scale Atomic Clock and Clock Coasting

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dc.contributor.advisorBisnath, Sunil B.
dc.contributor.authorYang, Sihan
dc.date.accessioned2020-11-13T13:59:37Z
dc.date.available2020-11-13T13:59:37Z
dc.date.copyright2020-09
dc.date.issued2020-11-13
dc.date.updated2020-11-13T13:59:37Z
dc.degree.disciplineEarth & Space Science
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractThe Precise Point Positioning (PPP) measurement processing technique for Global Navigation Satellite Systems (GNSS) is applied widely for scientific applications that require sub-metre level accuracy with few obstructions. PPP is expanding into mass-market applications at the consumer level. However, the technique suffers from inherent disadvantages of GNSS-based technologies. Obstructed environments such as urban canyons downgrade the solution. The study presents a solution that requires one less satellites in such scenarios and improves the navigation solution given poor geometry by implementing a clock coasting method to PPP and using a GNSS receiver aided by an external chip-scale atomic clock (CSAC). Data were collected in both static and kinematic scenarios. Through simulation of signal obstructions, the CSAC-aided receiver with clock-coasting produced solutions at sub-metre level of accuracy, even if only 3 satellites were available. The study leads to a more robust GNSS navigation solution that performs better with fewer satellites and a poor geometry
dc.identifier.urihttp://hdl.handle.net/10315/37980
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectEngineering
dc.subject.keywordsGNSS
dc.subject.keywordsCSAC
dc.subject.keywordsAtomic clock
dc.subject.keywordsUrban obstruction
dc.subject.keywordsAutonomous intelligent car
dc.titleGNSS-PPP Navigation in Obstructed Environments Using a Chip-Scale Atomic Clock and Clock Coasting
dc.typeElectronic Thesis or Dissertation

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