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dc.contributor.advisorJanaswamy, Ramakrishna
dc.contributor.authorConrad, Jeffrey G
dc.dateJune 1997
dc.date.accessioned2012-08-09T19:23:11Z
dc.date.available2012-08-09T19:23:11Z
dc.date.issued1997-06
dc.identifier.urihttps://hdl.handle.net/10945/8867
dc.description.abstractThe problem of propagation of vertically polarized radiowaves in an inhomogeneous atmosphere and over rough ocean surfaces is solved using the parabolic equation method. The solution of the parabolic equation is accomplished through the use of the Fourier split-step algorithm. Formulation of the equations is based upon (1) recognizing that the Fourier kernels of the transform equations in the split step algorithm represent planes waves and (2) compensating for the effects of rough ocean surfaces by using a rough surface reduction factor directly in the spectral domain. To accomplish this a redefinition of the Fourier transform pair is done to ensure mathematical consistency. The formulation also incorporates the first and second derivatives of the refractivity index to accommodate steep gradients in the refractivity profile. Hanning windows are used in both the spatial and wavenumber domains to contain computational requirements. The effects on propagation by varying parameters such as wave heights, computational domain ceilings, frequency and step size are investigateden_US
dc.description.urihttp://archive.org/details/propagationofver109458867
dc.language.isoeng
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsCopyright is reserved by the copyright owner.en_US
dc.subject.lcshRadio transmissionen_US
dc.titlePropagation of vertically polarized waves over rough ocean surfacesen_US
dc.typeThesisen_US
dc.contributor.secondreaderJenn, David C.
dc.contributor.corporateNaval Postgraduate School
dc.contributor.departmentDepartment of Electrical and Computer Engineering
dc.subject.authorRadio wave propagationen_US
dc.subject.authorParabolic equationen_US
dc.subject.authorRough ocean surfaceen_US
dc.subject.authorFourier split-step algorithmen_US
dc.description.serviceLieutenant Commander, Canadian Navyen_US
etd.thesisdegree.nameM.S. in Electrical and Computer Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineElectrical and Computer Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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