Airborne radar altimeter return waveform computations

dc.contributor.authorNewkirk, Michael Hayesen
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:31:41Zen
dc.date.adate2009-03-14en
dc.date.available2014-03-14T21:31:41Zen
dc.date.issued1990en
dc.date.rdate2009-03-14en
dc.date.sdate2009-03-14en
dc.description.abstractRadar altimeter experiments have shown the need for expanding the downward-looking, single-beam system into a multiple beam radar altimeter employing off-nadir altimetry so that information from a wider swath can be obtained from a single overflight. Problems associated with off-nadir altimetry include the effects of pointing angle errors on the return information and difficulty in performing accurate range tracking. In order to understand these problems, investigation of the sensitivity of the average return waveforms to pointing errors is necessary. These waveforms are computed using a convolutional model, including the effects of asymmetric antenna patterns, which is representative of NASA’s Multimode Airborne Radar Altimeter. The necessary convolutions are most efficiently performed by a method that uses the fast Fourier transform. The modeled waveforms are then used to devise a method that provides an estimate the pointing angle.en
dc.description.degreeMaster of Scienceen
dc.format.extentvii, 128 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-03142009-040630en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03142009-040630/en
dc.identifier.urihttp://hdl.handle.net/10919/41611en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1990.N486.pdfen
dc.relation.isformatofOCLC# 23604977en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1990.N486en
dc.subject.lcshAirplanes -- Radar equipmenten
dc.subject.lcshRadaren
dc.titleAirborne radar altimeter return waveform computationsen
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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