METHOD FOR PROCESSING GEOREFERENCED ELECTRICAL RESISTIVITY MEASUREMENTS FOR THE REAL-TIME ELECTRICAL MAPPING OF SOIL

摘要

The invention relates to a method for processing georeferenced electrical resistivity measurements for electrical ground mapping. The area of a ground to be mapped is cut into a thin grid of points. According to the invention, measuring means enable to obtain n parameters (n being equal to at least 3) characterising the electrical resistivity at a given point at n different depths. Positioning means also enable to obtain, for a number k of measured points, an absolute positioning measurement and k relative displacement measurements. The three sets of measurements obtained are sent to a microcontroller which synchronises the acquisitions. The data sent by the microcontroller to a computer is processed digitally and in real time. A profile showing the sequential variations for a given depth of the ground resistivity through the area studied and a map showing the position of the measuring means are finally visualised simultaneously and in real time on two different display windows. Possible applications in Precision Agriculture and the prospection of archaeological sites.