1. A method for detecting target objects by a first sensor device containing at least one first sensor and a second sensor device containing at least one second sensor, wherein the second sensor is alignable by a control device in different spatial directions, the method comprising: a) detecting target objects by the first sensor device; b) determining at least one first target parameter for the target objects, respectively; c) storing at least a part of the target objects with the at least one first target parameter and information on a spatial direction of the target object relative to a position of the second sensor; d) assessing the stored target objects based on target parameters and stored assessment criteria, and determining a highest priority target object thereby; e) aligning the second sensor to the highest priority target object determined in step d) and obtaining a sensor signal of the second sensor to the target object; f) extracting at least one further target parameter by automatic evaluation of the sensor signal obtained on a target object in the second sensor; and g) performing steps d) through f) repeatedly.