Show simple item record

dc.contributor.advisorHussey, Glenn C.en_US
dc.creatorPerry, Gareth Williamen_US
dc.date.accessioned2010-08-19T09:21:57Zen_US
dc.date.accessioned2013-01-04T04:53:34Z
dc.date.available2011-08-24T08:00:00Zen_US
dc.date.available2013-01-04T04:53:34Z
dc.date.created2010-07en_US
dc.date.issued2010-07en_US
dc.date.submittedJuly 2010en_US
dc.identifier.urihttp://hdl.handle.net/10388/etd-08192010-092157en_US
dc.description.abstractA 50 MHz Frequency Modulated Continuous Wave (FMCW) radar system, developed at the University of Saskatchewan to provide improved spatial and temporal resolution measurements of auroral E-region plasma processes, introduces ambiguous spectral information, due to spectral ghosting, for scattering events in which multiple radar echoes are detected. This thesis identifies two Linearly Frequency Modulated (LFM) radar waveforms used by the FMCW system as the source of the ghosting. An analysis procedure designed to counteract the spectral ghosting problem is developed but is not an ideal solution, and therefore replacement of the LFM waveforms is recommended. A detailed investigation of alternative radar waveforms using the Ambiguity Function and Ambiguity Diagram techniques is performed. A frequency coded continuous wave radar waveform based on a composite Costas sequence is proposed as a successor to the LFM waveforms. The composite Costas radar waveform will conserve the spatial and temporal resolutions extended by the LFM waveforms and preclude any spectral ghosting. Implementing the proposed radar waveform and avoiding receiver saturation issues with the mono-static FMCW radar system in which both the transmitting and receiving antenna arrays are simultaneously and continuously active and geographically co-located is also discussed. In addition to this, two 50 MHz backscatter events are presented in this thesis to demonstrate the effectiveness of the FMCW system, notwithstanding the spectral ghosting complication. The first event from November 21, 2009 is identified as a Type 1 instability and the second from September 13, 2009 is identified as a Type 2 instability which lasted for ~ 16 minutes. Linear plasma fluid theory is used to provide a brief interpretation of both scattering events.en_US
dc.language.isoen_USen_US
dc.subjectatmospheric physicsen_US
dc.subjectionosphereen_US
dc.subjectE regionen_US
dc.subjectFrequency Modulated Continuous Waveen_US
dc.subjectauroraen_US
dc.subjectLFMen_US
dc.subjectLinearly Frequency Modulated waveformen_US
dc.subjectradaren_US
dc.subjectCostasen_US
dc.subjectFMCWen_US
dc.subjectradar waveformen_US
dc.titleOptimization of a 50 MHz Frequency Modulated Continuous Wave radar system for the study of auroral E-region coherent backscatteren_US
thesis.degree.departmentPhysics and Engineering Physicsen_US
thesis.degree.disciplinePhysics and Engineering Physicsen_US
thesis.degree.grantorUniversity of Saskatchewanen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Science (M.Sc.)en_US
dc.type.materialtexten_US
dc.type.genreThesisen_US
dc.contributor.committeeMemberSalt, Ericen_US
dc.contributor.committeeMemberXiao, Chijinen_US
dc.contributor.committeeMemberMcWilliams, Kathrynen_US
dc.contributor.committeeMemberSteele, Tomen_US
dc.contributor.committeeMemberBourassa, Adamen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record