A process to graphically demonstrate distance errors associated with local ground-based coordinate systems
Article
Article Title | A process to graphically demonstrate distance errors associated with local ground-based coordinate systems |
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ERA Journal ID | 4384 |
Article Category | Article |
Authors | |
Author | Gibbings, P. D. |
Journal Title | Survey Review |
Journal Citation | 49 (356), pp. 1-9 |
Number of Pages | 9 |
Year | 2017 |
Place of Publication | United Kingdom |
ISSN | 0039-6265 |
1752-2706 | |
Digital Object Identifier (DOI) | https://doi.org/10.1080/00396265.2016.1172815 |
Web Address (URL) | http://www.tandfonline.com/doi/pdf/10.1080/00396265.2016.1172815 |
Abstract | This paper describes an empirical process for graphically illustrating, on any project, and using any particular distance accuracy specification, boundaries where significant errors could be introduced in derived ground distances as a result of using local ground-based coordinate systems. The process involves selecting three-dimensional points across the project site, replacing their heights with combined scale factor corrections, and creating contours to represent potential distance errors. The resultant contour map shows potential distance errors in parts per million, which, for comparison with accuracy specifications and practical deliberations, are considered millimetres per kilometre. The effectiveness will depend on the spacing of the selected points and the topography of the project site, but on most projects today closely spaced three dimensional points are readily available. The benefits were demonstrated on an example site, with the conclusion that the process is robust and effective, and will have applications on many large scale civil construction sites, residential estate developments, and other surveys where local ground-based coordinate systems may be used. |
Keywords | GNSS; local ground-based coordinates; map projections; scale factors |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 339999. Other built environment and design not elsewhere classified |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Faculty of Health, Engineering and Sciences |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q365y/a-process-to-graphically-demonstrate-distance-errors-associated-with-local-ground-based-coordinate-systems
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