Study of slant path attenuation ratios derived from a dual-polarized radar

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dc.contributor.authorPollard, Kimberley Jeanneen
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:31:04Zen
dc.date.adate2009-03-12en
dc.date.available2014-03-14T21:31:04Zen
dc.date.issued1990en
dc.date.rdate2009-03-12en
dc.date.sdate2009-03-12en
dc.description.abstractThe use of communication satellites operating above 10 GHz has prompted research on the attenuating effects of rain on these signals. Frequency scaling, a technique where attenuation at one frequency can be scaled up (or down) to another frequency, can extend the known data base of propagation impairments. This thesis studies the ratios of attenuations in frequency pairs 14/11, 30/20, 30/11, and 20/14 GHz. The attenuation data were derived from a year-long propagation experiment which used a dual-polarized radar to estimate drop size distributions on a slant path between Blacksburg, Virginia, and the Intelsat VA F10 satellite. The effect of varying drop size distributions on attenuation ratios is discussed. An uplink power control simulation is developed using the attenuation ratios. Attenuation on the uplink path is estimated by scaling the measured downlink attenuation by the appropriate attenuation ratio. The evidence suggests that an uplink power control scheme using drop size distribution-based attenuation ratios offers improvement in satellite link reliability during rain storms.en
dc.description.degreeMaster of Scienceen
dc.format.extentxi, 134 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-03122009-040448en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03122009-040448/en
dc.identifier.urihttp://hdl.handle.net/10919/41447en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1990.P658.pdfen
dc.relation.isformatofOCLC# 22839470en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1990.P658en
dc.subject.lcshArtificial satellites in telecommunication -- Systems engineeringen
dc.subject.lcshSignal processing -- Researchen
dc.titleStudy of slant path attenuation ratios derived from a dual-polarized radaren
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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