GNSS-PPP Navigation in Obstructed Environments Using a Chip-Scale Atomic Clock and Clock Coasting
dc.contributor.advisor | Bisnath, Sunil B. | |
dc.contributor.author | Yang, Sihan | |
dc.date.accessioned | 2020-11-13T13:59:37Z | |
dc.date.available | 2020-11-13T13:59:37Z | |
dc.date.copyright | 2020-09 | |
dc.date.issued | 2020-11-13 | |
dc.date.updated | 2020-11-13T13:59:37Z | |
dc.degree.discipline | Earth & Space Science | |
dc.degree.level | Master's | |
dc.degree.name | MSc - Master of Science | |
dc.description.abstract | The 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.uri | http://hdl.handle.net/10315/37980 | |
dc.language | en | |
dc.rights | Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests. | |
dc.subject | Engineering | |
dc.subject.keywords | GNSS | |
dc.subject.keywords | CSAC | |
dc.subject.keywords | Atomic clock | |
dc.subject.keywords | Urban obstruction | |
dc.subject.keywords | Autonomous intelligent car | |
dc.title | GNSS-PPP Navigation in Obstructed Environments Using a Chip-Scale Atomic Clock and Clock Coasting | |
dc.type | Electronic Thesis or Dissertation |
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