摘要： Numerous issues in the design, construction and operation of wind turbines require vibration measurements, especially on rotor blades under operating conditions. Built-in sensors can only perform this task selectively, externally mounted sensors only with great effort and possible influence on the object to be measured. A system-independent, distant measuring method will be presented here: the combination of a laser Doppler vibrometer with a method for tracking the rotation of the rotor. It requires a separation of the effects caused by the macroscopic movement of the rotor from the real vibration movements. One is the Doppler effect of the fast rotor movement, additionally, the signal noise of the backscattered coherent laser radiation and motion artifacts due to the oblique viewing angle are discussed. First test measurements demonstrated the applicability of the method despite these challenges.