Local ground-based plane coordinates
Article
Article Title | Local ground-based plane coordinates |
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Article Category | Article |
Authors | Pickford, Jeffrey (Author) and Gibbings, Peter (Author) |
Journal Title | Spatial Science Queensland |
Number of Pages | 10 |
Year | 2009 |
Place of Publication | Brisbane, Australia |
Web Address (URL) | http://www.spatialsciences.org.au |
Abstract | When using RTK GPS it is convenient for surveyors to set their field controllers so they operate in local ground-based coordinates. Unfortunately this is not always done properly, and the errors associated with doing this are often not fully understood. This paper outlines the establishment of two different local ground-based coordinate systems: one based on the Tangent Plane; and the other based on the Transverse Mercator projection. The errors introduced by these projections are then analysed, and recommendations are made for their appropriate use. It was concluded that significant errors may be introduced by extending the coordinate systems any more than a few kilometres from the central project point, and height changes of as little as 20 metres may also be significant. |
Keywords | GPS; coordinate systems; surveyors; ground based; tangent plane; transverse mercator projection |
ANZSRC Field of Research 2020 | 401306. Surveying (incl. hydrographic surveying) |
401303. Navigation and position fixing | |
490412. Topology | |
Byline Affiliations | Department of Surveying and Land Information |
Australian Centre for Sustainable Catchments |
https://research.usq.edu.au/item/9z053/local-ground-based-plane-coordinates
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