Removal of interference inherent in the lens radar system

dc.contributor.authorKirchner, David J.en
dc.contributor.committeechairBrown, Gary S.en
dc.contributor.committeememberPratt, Timothy J.en
dc.contributor.committeememberStutzman, Warren L.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:50:16Zen
dc.date.adate2012-11-20en
dc.date.available2014-03-14T21:50:16Zen
dc.date.issued1988-06-06en
dc.date.rdate2012-11-20en
dc.date.sdate2012-11-20en
dc.description.abstractThe NASA GSFC/Wallops Flight Facility focused radar system employed a large (43 cm diameter) dielectric focusing lens such that the water surface (target) was illuminated by a small radar spot (~1.25 cm diameter). With this small spot size, surface profiles and probability density functions could be generated. The system suffered an interference problem which made reliable data collection impossible. Study showed that the system had to be operated bistatically in order to reduce the effects of interference found to be caused by signal leaking directly from the transmitter to the receiver. Since the system was operated in a confined space (the wind-wavetank), multipath was found to generate interference signals. The multipath interference was reduced via strategic placement of radio frequency absorber. A comparison was made between experimental results with the original system and the final bistatic system to demonstrate the effect of the reduction in interference. A model was also derived for the direct leakage interference and used to explain experimental results.en
dc.description.degreeMaster of Scienceen
dc.format.extentxiii, 130 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11202012-040030en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11202012-040030/en
dc.identifier.urihttp://hdl.handle.net/10919/45885en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1988.K572.pdfen
dc.relation.isformatofOCLC# 18676682en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1988.K572en
dc.subject.lcshRadar receiving apparatusen
dc.subject.lcshRadaren
dc.titleRemoval of interference inherent in the lens radar systemen
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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