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Ionospheric total electron content studies using satellite radio transmissions /Breed, Anthony M. Unknown Date (has links)
Thesis (M App Sc) -- University of South Australia, 1992
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The ionospheric gyro-selfinteraction of radio waves at vertical incidence / by G.J. Aitchison.Aitchison, Gordon James January 1955 (has links)
Typewritten copy / Includes bibliography. / 74 leaves : diag. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, 1957?
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The ionospheric gyro-selfinteraction of radio waves at vertical incidence /Aitchison, Gordon James. January 1955 (has links) (PDF)
Thesis (Ph.D.)--University of Adelaide, 1957? / Typewritten copy. Includes bibliography.
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EM groundwave propagation over the curved lunar surfaceCho, SeHyun, January 1970 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Power spectra obtained from a three dimensional model of a troposcatter channelWinston, Robert Mark, January 1970 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Anisotropic turbulence and stochastic arrays of three-dimensional scatterers in the simulation of transhorizon tropospheric propagationDuvoisin, Paul Frank, January 1969 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1969. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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RAKE resolution analysis and models of refractive index fluctuations for tropospheric scatter propagationDerbort, Herman Joseph, January 1970 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Estimation of the spectral moments and quadrature cross-correlation function and their application to troposcatter systemsGupta, Ashok Kumar, January 1900 (has links)
Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 262-268).
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An investigation of oblique incidence propagation of radio pulses between Grahamstown and DurbanNadasen, Arunajallam January 1968 (has links)
This thesis describes the investigation carried out on the propagation of radio pulses of frequency 4.73 Mc/s between Grahamstown and Durban. The thesis is divided into two sections - A and B. Section A consists of two chapters. The introductory chapter gives a brief account of how the existence of the ionosphere came to be known. Then follows a description of the different layers of ionization and a review of the theories that have been propounded on the formation of these layers. Chapter 2 deals with the apparatus which includes the transmitter in Grahamstown and the receiving apparatus in Durban. The receiving apparatus comprises: i) a superheterodyne receiver whose gain was high (between 130 and 140 dbs); (ii) a time delay calibrator which could measure time differences of 100 μsec fairly accurately; (iii) a 310 A Tektronix oscilloscope; (iv) a continuously running 35 mm recording camera. Section B is made up of three chapters and is concerned with the actual analysis of the data recorded. The theory of propagation of radio waves in the ionosphere is discussed in Chapter 3. The effects of the magnetic field are neglected since it is found that the error introduced would not make the results unacceptable. Chapter 4 contains the analysis of the data recorded. One summer day and one winter day are discussed in detail in order to obtain the pattern of the diurnal variations for both summer and winter. Some interesting phenomena are also dealt with. An attempt to do ray tracing was successful and the paths followed by a Pedersen and a lower ray from Grahamstown to Durban have been drawn. New topics for further research are discussed in Chapter 5. There are two appendices. Appendix I gives the time delays of all the pulses recorded and their possible identifications. An overall picture of the propagation via the various layers throughout the day (both for summer and for winter is presented in Appendix II.
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The Effect of Digital Elevation Model Resolution on Wave Propagation Predictions at 24GhzRose, Scott Michael 09 May 2001 (has links)
Digital Elevation Models (DEMs) are computer-generated representations of the earth's surface. These surfaces can be used to predicted Line-of-Sight (LOS) radio propagation. DEM resolution can affect the results of this prediction. This study examines the effect of DEM resolution on accuracy by comparing varied resolution terrain data for a portion of Blacksburg, Virginia using the prediction of ESRI's ArcView® viewshed algorithm. Results show that resolutions between one-meter and thirty-meters have little effect on the aggregate accuracy of the viewshed. / Master of Science
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