An electronic system for mapping a work site that includes a plurality of radar sensors to be provided on vehicles moving on the site, the radar sensors being able to detect objects included in a respective area of detection and acquire their relative positions. The system includes a speed module configured for determining a speed parameter for objects detected by the radar sensors, according to their relative positions. The system also includes a classification module configured for classifying detected objects as standing still or moving objects according to the respective speed parameters, and a map module configured for creating a common map of the site providing the positions of standing still objects detected in the site by said plurality of radar sensors, according to a reference system.