Sunday 1 August 2010 by Libadmin2010

10th International Multidisciplinary Scientific GeoConference - SGEM2010, www.sgem.org, SGEM2010 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 20-26, 2010, Vol. 1, 861-868 pp


The Republic of Croatia, as any other country in the world that has been faced with the
war consequences is burdened with one of the most difficult consequences – mine
contamination. Therefore the most sophisticated Mine Information System (MIS) has
been established in the Croatian Mine Action Centre (CROMAC). Mine Information
System of the Croatian Mine Action Centre applied in the system of anti-mine activity
in the Republic of Croatia. Geodetic measurements of searched and demined areas is
one of the actions that has to be done in order to collect the data and adjust them for
usage in Mine Information System. The method to be used to perform geodetic
measurements of the demined area depends mostly on the location of the demined
polygon, as well as on the terrain configuration. The areas suspicious with regard to the
presence of mines are located in inaccessible areas, as e.g.: at the top of mountain
ranges and the areas covered with dense forests. Such areas can also be found on
agricultural fields, as well as in inhabited places. However, it is hardly probable that the
fundamental network of geodetic control points at such places has not been destroyed
since the area was mined. Geodetic survey of demined area does not imply previous
terrain reconnaissance, but the part of planning is made in the office in digital ortho
photo, and the selection of point stabilization place of the geodetic base is done at the
moment of making geodetic works. the paper describes the geodetic works in the
procedure of demining one polygon at the territory of the Republic of Croatia. Two
methods have been used for the purpose of determining the coordinates of the geodetic
base points: relative static method of GPS and polygonometry. The coordinates of form
lines of the demined polygon are determined by means of tacheometry. The processing
of GPS measurement data processing has been done with the software Trimble
Geomatics Office (TGO), version 1.63. The coordinates of polygon points and of break
point coordinates have been computed using the software GeoMIR4. The areas of the
demined polygon have been computed using analytical method, out of the coordinates
of break points. For the purpose of maintaining the Mine Information System the
demined polygon is presented on the maps of the scale 1:5000 and 1:25 000.

Keywords: mine information system, digital ortho photo, geodetic survey, demined polygon, GPS.