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dc.contributor.authorRavindran Varrier, Nityaen_US
dc.date.accessioned2014-03-14T20:41:25Z
dc.date.available2014-03-14T20:41:25Z
dc.date.issued2010-06-29en_US
dc.identifier.otheretd-07132010-155632en_US
dc.identifier.urihttp://hdl.handle.net/10919/33998
dc.description.abstractThe Super Dual Auroral Radar Network (SuperDARN) is an international network of high frequency (HF) coherent scatter radars, employed to detect backscatter from magnetic field aligned plasma irregularities in the ionosphere and to study the near- Earth space weather. Space weather impacts many technological systems including HF communications, Global Positioning System (GPS), and surveillance radars. Variations in the pattern of the backscatter from the ground (â ground scatterâ ) observed by the SuperDARN radars give information regarding the state of the ionosphere. In this thesis, ray tracing simulation of the observed ground scatter pattern for the mid-latitude SuperDARN radar at Blackstone, Virginia is implemented. An existing ray tracing code was modified, to incorporate the IRI-2007 model for electron density. This ray tracing code was used to simulate the ground scatter pattern observed at Blackstone in the year 2009. Simulations were compared with the observed ground scatter to assess our understanding of the ionospheric conditions. The IRI-2007 model is found to be adequate to predict the average ground scatter pattern observed through the year, including the winter anomaly. However, one deficiency with the IRI-2007 model is its inability to predict the sporadic E layer formation in summer and an anomalous evening enhancement in backscatter power observed in some months of the year, described here for the first time. Finally some suggestions are presented for the further improvement of the simulation methods for backscatter prediction.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartRavindranVarrier_N_T_2010.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectPropagation Analysisen_US
dc.subjectIRI-2007en_US
dc.subjectHF radaren_US
dc.subjectRay Tracingen_US
dc.subjectSuperDARNen_US
dc.titleRay Tracing Analysis for the mid-latitude SuperDARN HF radar at Blackstone incorporating the IRI-2007 modelen_US
dc.typeThesisen_US
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineElectrical and Computer Engineeringen_US
dc.contributor.committeememberEllingson, Steven W.en_US
dc.contributor.committeememberScales, Wayne A.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07132010-155632/en_US
dc.contributor.committeecochairBaker, Josephen_US
dc.contributor.committeecochairRuohoniemi, J. Michaelen_US
dc.date.sdate2010-07-13en_US
dc.date.rdate2010-08-04
dc.date.adate2010-08-04en_US


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