Antenna axis offset and intersection determination using GPS

dc.contributor.advisorMerry, Charlesen_ZA
dc.contributor.authorCombrinck, Willem Ludwigen_ZA
dc.date.accessioned2016-03-04T16:45:21Z
dc.date.available2016-03-04T16:45:21Z
dc.date.issued1996en_ZA
dc.descriptionBibliography: p. 101-108.en_ZA
dc.description.abstractModern geodesy utilises advanced space techniques such as VLBI to further the study of crustal motion as well as tidal and rotational deformations of the Earth. One of the parameters in the model used to determine the baseline length between VLBI stations, is the antenna axis offset. This offset is the distance between the secondary axis and the normal projection of the secondary axis onto the primary axis. For a non-intersecting axes antenna mounting, this offset is usually several metres in length. The accuracy of the offset value directly influences the total accuracy of the VLBI results. This work describes how GPS is used to determine the offset and VLBI reference point. Several algorithms for calculating these parameters are investigated and evaluated. Methods are developed to minimise the size and influence of errors. An evaluation and comparison of the results to previous independent determinations of the offset, which use different techniques and instrumentation, clearly show the feasibility of using GPS. This method has the added advantage of allowing the VLBI, SLR and GPS reference frames to be co-located.en_ZA
dc.identifier.apacitationCombrinck, W. L. (1996). <i>Antenna axis offset and intersection determination using GPS</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,School of Architecture, Planning and Geomatics. Retrieved from http://hdl.handle.net/11427/17478en_ZA
dc.identifier.chicagocitationCombrinck, Willem Ludwig. <i>"Antenna axis offset and intersection determination using GPS."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,School of Architecture, Planning and Geomatics, 1996. http://hdl.handle.net/11427/17478en_ZA
dc.identifier.citationCombrinck, W. 1996. Antenna axis offset and intersection determination using GPS. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Combrinck, Willem Ludwig AB - Modern geodesy utilises advanced space techniques such as VLBI to further the study of crustal motion as well as tidal and rotational deformations of the Earth. One of the parameters in the model used to determine the baseline length between VLBI stations, is the antenna axis offset. This offset is the distance between the secondary axis and the normal projection of the secondary axis onto the primary axis. For a non-intersecting axes antenna mounting, this offset is usually several metres in length. The accuracy of the offset value directly influences the total accuracy of the VLBI results. This work describes how GPS is used to determine the offset and VLBI reference point. Several algorithms for calculating these parameters are investigated and evaluated. Methods are developed to minimise the size and influence of errors. An evaluation and comparison of the results to previous independent determinations of the offset, which use different techniques and instrumentation, clearly show the feasibility of using GPS. This method has the added advantage of allowing the VLBI, SLR and GPS reference frames to be co-located. DA - 1996 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1996 T1 - Antenna axis offset and intersection determination using GPS TI - Antenna axis offset and intersection determination using GPS UR - http://hdl.handle.net/11427/17478 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/17478
dc.identifier.vancouvercitationCombrinck WL. Antenna axis offset and intersection determination using GPS. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,School of Architecture, Planning and Geomatics, 1996 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17478en_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.otherSurveying and Geodetic Engineeringen_ZA
dc.titleAntenna axis offset and intersection determination using GPSen_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
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