The experience of the measuring technicians is a pre-requisite for the responsible handling of the measuring results. Correct acquisition of data and a complete documentation are active constituents of quality assurance at P-H-Röhll NRW. The proper handling of D-GPS which is precise to half an inch enhances the precise search in the areas surrounding a suspected site.
Aided by the satellite-based system the specialists at Röhll compare the geographic coordinates of the terrain with original aerial photographs, thus supporting successful detection. With its excellent track rates the system at the same time improves the effectiveness of surface detection.