Local ground-based plane coordinates

Pickford, Jeffrey and Gibbings, Peter (2009) Local ground-based plane coordinates. Spatial Science Queensland. pp. 1-10. ISSN 1835-1735

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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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: No
Item Status: Live Archive
Additional Information: Copies and extracts from Spatial Science Queensland are permitted under the Creative Commons framework on an Attribution and Share Alike basis.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Surveying and Land Information
Date Deposited: 27 Aug 2013 01:22
Last Modified: 27 Aug 2013 01:22
Uncontrolled Keywords: GPS; coordinate systems; surveyors; ground based; tangent plane; transverse mercator projection
Fields of Research : 09 Engineering > 0909 Geomatic Engineering > 090906 Surveying (incl. Hydrographic Surveying)
09 Engineering > 0909 Geomatic Engineering > 090904 Navigation and Position Fixing
01 Mathematical Sciences > 0101 Pure Mathematics > 010112 Topology
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology
URI: http://eprints.usq.edu.au/id/eprint/5212

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