The paper deals about significant projects of large scale mapping at the beginning of 19th century in the Habsburg Empire. They have been already based on uniform geodetic horizontal control. Basic parameters and features of Second Military Survey in the territory of the Czech Lands as well as links with project of Stable cadastre are delineated. Technology of establishing the horizontal control (1st order trigonometric networks) is described in detail. Qualitative parameters of geodetically measured data and the survey documentation are analysed. Accuracy analysis of angular measurements and methodology of co-ordinate computations in the Gusterberg coordinate system are also discussed.By means of identical points the horizontal control enables unambiguous transformation from the Gusterberg and St. Stephen co-ordinate systems into the national co-ordinate system (JTSK) or WGS 84 with the accuracy higher than graphical accuracy of original maps. This transformation, published here as the global transformation key (GTK), is of great importance. The results of tests of GTKs compiled separately for Bohemia and Moravia+Silesia together with the analysis of contact zone of both above mentioned historical co-ordinate systems are introduced.As an example of GTK application georeferenced map sheets from Second Military Survey are presented. GTKs are of fundamental importance in unification of heterogeneous geodetic information files of cadastre of real estates in the Czech Republic.
Authors:Nestor Oszczypko, Marta Oszczypko-Clowes, Jan Golonka, and Michal Krobicki
: Stratigraphy of Cretaceous sediments of the Magura Group of Nappes in Moravia. - Geol. Carpath., 48, pp. 179 - 191 .
Stratigraphy of Cretaceous sediments of the Magura Group of Nappes in Moravia. -
In the period between 1918 and 1945 military surveys or revision of previous maps were undertaken in the newly established Czechoslovak state. From this period, four sets of military topographic maps can be distinguished. The first set is represented by revised maps of the Third Austrian Military Survey. The revision was conducted between 1921 and 1954 and the map sheets are at scale 1:25 000. The second set is the maps of provisional military survey from 1923 to 1933 at scales 1:10 000 and 1:20 000. They were drawn in the Beneš’s normal conformal conic projection and were completed only for a few percents of the state territory. The third set includes maps from 1934–1938, when a definite military survey was carried out. These 1:20 000 maps were completed using the Křovák’s oblique conformal conic projection, covering again only a part of the state territory, in this case almost one tenth of it. Finally, the German maps called “Messtischblätter” (plane table sheets) were created during the German occupation of the Czech lands in the World War II at scale 1:25 000. They were created in the Gauss-Krüger transverse cylindrical projection and covered about 10% of the state territory, mainly in Moravia. All four map sets used the Bessel’s ellipsoid.