Česky | English

The Self-Firm and Cooperative Projects

DIGITAL MAPS

From 2001 to 2002 job order was realized into satellite map schemes production of the northern part of Sudan in the scale of 1:100 000 and 1:50 000 for geological survey (overall approx. 60 000 km²).
The multispectral data from Landsat 7 satellite (ETM+, 30 m resolution) were the fundamental source for creation of these map schemes. It was created acceptable color synthesis after control of radiometrical and geometrical data accuracy. The area of the 5 whole satellite scenes was transformed to the WGS84 coordinate system. The ground identical points localization directly in terrain by GPS (Global Positiong System) was realized for transformation improvement.
We used old maps (the latest maps are from the thirties of last century) for formation of nomenclature. This nomenclature was improved by local investigation. The geodetic and mathematical base of map sheets nomenclature was solved. Vizualization and printing of map schemes was realized.

digit_mapa1-m.gif, 13 kB digit_mapa2-m.gif, 16 kB

>> back to list of projects
© Aretin geoinformatics s.r.o. Vyšehradská 2, 128 00 Praha 2 | Tel.: +420 777 590 190 | info@aretin.cz