1. A system for determining a region searched by a moving scent detector in the presence of wind, said moving scent detector having pre-calibrated scent capabilities, the system comprises: positioning means attached to the moving scent detector for determining a trajectory followed by the moving scent detector; scent pattern obtainment means for obtaining an oriented scent pattern and, combination means arranged for combining said trajectory and said oriented scent pattern to obtain the region searched by said moving scent detector.