Geodetski list, Vol. 67 (90) No. 3, 2013.
Review article
The Statistical Approach for Estimation of Horizontal Uncertainty of the Points of Digital Large-scale Maps
Adam Doskocz
orcid.org/0000-0003-0545-2391
; Faculty of Geodesy and Land Management, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
Abstract
The paper presents results of estimation of the horizontal uncertainty of digital map data produced by means of various methods: new total station survey (method A), re-calculation of previous direct measurements realised by orthogonal and polar system surveys (B), manual vectorisation of a raster orthophotomap image (C) and graphical-and-digital processing of analogue maps (D). The research was made on large-scale maps (i.e. on investigated objects A, B, C and D, which were produced by means of various methods) with use of statistical approach. Statistical analysis has been performed for large statistical samples of vectors sets of control points shift εL and their components, i.e. true errors of increments of the plane coordinates εX, εY. In result of research was stated that large-scale digital maps based on data acquired from various methods do not always meet the requirements of accuracy level specified in technical standards.
Keywords
large-scale digital maps; horizontal uncertainty; statistical approach
Hrčak ID:
109205
URI
Publication date:
20.9.2013.
Visits: 1.511 *