The invention relates to a method of processing a set of data collected by at least one sensor at successive points on the travel over a plot of land (1), by at least one vehicle (2), each one of the said pieces of data having been recorded with a time difference in relation to the moment of the vehicle passing over a given point on the plot, i.e. representing information relating to the state of the vehicle at a moment prior to its moment of recording, each piece of data being associated with a moment of recording and a geographical position of a point known as the measuring point at this moment of recording, supplied by geolocation means.The method comprises a phase of estimating an optimum difference value by minimizing a degree of projection of a three-dimensional map of values measured at each geographical point, and correction of the data measured from this difference.
