Show simple item record

dc.contributor.advisorSchwarz, Klaus-Peter P.
dc.contributor.authorSideris, Michael G., 1958-
dc.date.accessioned2005-07-21T20:52:59Z
dc.date.available2005-07-21T20:52:59Z
dc.date.issued1984
dc.identifier.citationSideris, M. G. (1984). Computation of gravimetric terrain corrections using fast fourier transform techniques (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/14395en_US
dc.identifier.isbn0315262397en
dc.identifier.urihttp://hdl.handle.net/1880/23162
dc.descriptionBibliography: p. 97-100.en
dc.description.abstractThe scope of this research is the development of a method for evaluating the terrain correction integral using Fast Fourier Transform (FFT) techniques. The FFT method presented herein is a very fast and rigorous method of computing the terrain corrections. The only data required are the elevations of the points on a plane grid with constant spacing along the x and the y direction. The terrain corrections are computed simultaneously for all grid points. This is a valuable feature of the method for use in the solution of bolll1dary value problems in physical geodesy. The method is insensitive to errors in the heights and gives results of about the same accuracy as those obtained by the conventional prism methods using the same gridded data. The main advantage of the FFT method is its computational efficiency. It requires, for the computation of the terrain corrections for all N points on a grid, a time roughly proportional to NlogN, while the prism methods require a time roughly proportional to N2. In addition to its speed, the FFT method provides the means for spectral and correlation analyses between heights and terrain corrections. The procedures for such analyses are given in this thesis together with a presentation of the main features of the two-dimensional discrete Fourier transform. A simple computer program, written in FORTRAN V, is given, which can be used as the basis for building up a complete and flexible software package on terrain correction computations.
dc.format.extentxvi, 102 leaves : ill. ; 30 cm.en
dc.language.isoeng
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject.lccQB 331 S 52 1986en
dc.subject.lcshGravity - Measurement
dc.subject.lcshFourier transformations
dc.subject.lcshBoundary value problems
dc.titleComputation of gravimetric terrain corrections using fast fourier transform techniques
dc.typemaster thesis
dc.publisher.institutionUniversity of Calgaryen
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/14395
thesis.degree.nameMaster of Science
thesis.degree.nameMS
thesis.degree.nameMSc
thesis.degree.disciplineCivil Engineering
thesis.degree.grantorUniversity of Calgary
dc.identifier.lccQB 331 S 52 1986en
dc.publisher.placeCalgaryen
ucalgary.thesis.notesoffsiteen
ucalgary.thesis.uarcreleasenoen
ucalgary.thesis.accessionTheses Collection 58.002:Box 525 215772128


Files in this item

Thumbnail
Embargoed until: 2200-01-01

This item appears in the following Collection(s)

Show simple item record

University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.