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Estimation of accuracy of large-scale digital maps made from existing geodetic and cartographic materials

Dąbrowski T., Doskocz A.

Reports on Geodesy

2003

z. 2/65

247-251

Large-scale digital maps are commonly made in Poland by means of graphic and digital processing of analogue maps. An alternate and less popular tendency consists in using also results of previous field surveys. The paper presents estimation of accuracy of digital base map of two provincial capital cities. In the first city (an object A) the digital map was developed by means of graphic-digital processing of analogue base map of scale 1:500. In the second city (an object B) there were adapted existing results of field surveys made during recent thirty years with reference to exact geodetic networks. Estimated accuracy resulting from performed investigations in both cases, as well as some general conclusions concerning technologies of making large-scale digital maps are also given in the paper.