For mobile wind measurements with high requirements, e.g. in the wind energy sector, trailers are available for stand-alone or grid-connected use, which accommodates both a Doppler SODAR of type PCS.2000-24 and a Doppler LIDAR (Wind Ranger, Streamline). The involved measuring techniques complement each other ideally in terms of data accuracy and data availability: the LIDAR method provides the higher measuring accuracy, while the SODAR method also works in fog, very low-hanging clouds or other severe visibility restrictions.