Investigation of refraction effects for small GPS networks

Simple item page
dc.contributor.advisorMerry, Charlesen_ZA
dc.contributor.authorChristiaans, Johanen_ZA
dc.date.accessioned2016-03-28T14:39:06Z
dc.date.available2016-03-28T14:39:06Z
dc.date.issued1991en_ZA
dc.description.abstractUsing observations from the Global Positioning System (GPS) satellites to determine a three dimensional (3-D) geodetic control network are considered. The repeatability of individual baselines and 3-D vector closures are examined, in order to investigate refraction effects on GPS networks. The effect on GPS baselines of a height bias in the reference point's coordinates is also investigated. A least squares adjustment program is developed and used to obtain a single consistent set of 3-D coordinates for the Tygerberg Test Network (TTN). The results of two GPS processing packages are compared by means of a conformal transformation. It is concluded that single frequency measurements produce better results than the ionospheric free observable on short baselines. Furthermore, a standard atmospheric model shows an improvement over the Marini model to account for tropospheric refraction.en_ZA
dc.identifier.apacitationChristiaans, J. (1991). <i>Investigation of refraction effects for small GPS networks</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,School of Architecture, Planning and Geomatics. Retrieved from http://hdl.handle.net/11427/18308en_ZA
dc.identifier.chicagocitationChristiaans, Johan. <i>"Investigation of refraction effects for small GPS networks."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,School of Architecture, Planning and Geomatics, 1991. http://hdl.handle.net/11427/18308en_ZA
dc.identifier.citationChristiaans, J. 1991. Investigation of refraction effects for small GPS networks. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Christiaans, Johan AB - Using observations from the Global Positioning System (GPS) satellites to determine a three dimensional (3-D) geodetic control network are considered. The repeatability of individual baselines and 3-D vector closures are examined, in order to investigate refraction effects on GPS networks. The effect on GPS baselines of a height bias in the reference point's coordinates is also investigated. A least squares adjustment program is developed and used to obtain a single consistent set of 3-D coordinates for the Tygerberg Test Network (TTN). The results of two GPS processing packages are compared by means of a conformal transformation. It is concluded that single frequency measurements produce better results than the ionospheric free observable on short baselines. Furthermore, a standard atmospheric model shows an improvement over the Marini model to account for tropospheric refraction. DA - 1991 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1991 T1 - Investigation of refraction effects for small GPS networks TI - Investigation of refraction effects for small GPS networks UR - http://hdl.handle.net/11427/18308 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/18308
dc.identifier.vancouvercitationChristiaans J. Investigation of refraction effects for small GPS networks. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,School of Architecture, Planning and Geomatics, 1991 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18308en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentSchool of Architecture, Planning and Geomaticsen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherGPS Networksen_ZA
dc.subject.otherGlobal Positioning Systemsen_ZA
dc.titleInvestigation of refraction effects for small GPS networksen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Eng)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
thesis_ebe_1991_christiaans_johan.pdf
Size:
1.53 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Masters