African Projects

IGS Corp./MWH Geo-Surveys Ltd./ESSO

Gravity/GPS Measurement at 50 degrees C
1997 Sudan - GPS QC of GPS data collection, processing, and data handling.











1995 (GPS Positioning for Gravity Survey - T'chad, Africa)
Digital Terrain Model

Underhill provided GPS and survey project management expertise on this survey in southern T'chad.

Over 5,000 gravity points were positioned to centimetre accuracies. Wild System 200/300 receivers were utilized in conjunction with Leica SKI post processing software.

GPS Control Network - T'Chad, Africa




Geolab was employed in the final least squares adjustment and analysis of the baseline vectors.