Performance of dual polarized site diversity satellite communications systems

dc.contributor.authorGaines, James Matthewen
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2022-06-29T19:26:44Zen
dc.date.available2022-06-29T19:26:44Zen
dc.date.issued1983en
dc.description.abstractDual polarization allows a communication system to transfer twice as much information as a single polarized communication system, with no increase in the required bandwidth. Site diversity may be used in high frequency satellite communication systems to reduce the effects of attenuation and depolarization due to rain and ice. This thesis examines dual polarized site diversity satellite communication systems to determine how such systems would perform under operating conditions. Three diversity system models, including a new model which incorporates local weather patterns, are discussed and compared. The problem of how to select the best signals from the available diversity replicas is investigated for both PSK and FM modulation schemes. A new technique is proposed for combining the effects of attenuation. and isolation into a single criterion for FM systems. The thesis considers methods for improving dual polarized site diversity system performance. Compensation schemes, coherent signal addition, and optimum site location are investigated. A compensation scheme using pilot tones is proposed. Finally, the performance of operational PSK and FM systems is simulated using data from a VPI & SU satellite beacon experiment.en
dc.description.degreeM.S.en
dc.format.extentix, 123 pages, 2 unnumbered leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/111008en
dc.language.isoenen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 09762687en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1983.G335en
dc.subject.lcshArtificial satellites in telecommunicationen
dc.subject.lcshRadio waves -- Polarizationen
dc.subject.lcshRadio -- Receivers and reception -- Diversity systemsen
dc.titlePerformance of dual polarized site diversity satellite communications systemsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameM.S.en

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