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K: Fachverband Kurzzeit- und angewandte Laserphysik
K 4: Poster (joint session K/Q)
K 4.11: Poster
Dienstag, 3. März 2026, 17:00–19:00, Philo 1. OG
Impact of vertical Lidar misalignment on turbulence characterization for wind energy applications — •Vidana Popkova1, Florian Jäger1,2, Lukas Pauscher1,2,3, Fabian Spallek1, and Stefan Yoshi Buhmann1 — 1University of Kassel, Germany — 2Fraunhofer IEE, Kassel, Germany — 3Vrije Universiteit Brussel, Belgium
To evaluate the quality of possible wind-park locations, accurate knowledge of the turbulence characteristics of the expected wind-velocity-field is essential. The turbulence properties are commonly described by the variance of the field and may be extracted from measurements or simulations. Multi-LiDAR (Light Detection And Ranging) setups offer precise measurements for determining turbulence properties, but some systematic measurement uncertainties remain hard to control for. In particular, vertical offsets between LiDAR beams can drastically bias derived variances due to the large impact of the beam configuration on the measured data. We use a modified Mann model [1] to calculate the turbulence properties based on the spectral tensor and simulate dual-LiDAR configurations to study the influence of vertical offsets on the resulting variances. To this end, we introduce offsets directly in the spectral domain and examine their impact for varying atmospheric parameters. Several significant beam configurations are analyzed and compared with data from long-term mast measurements. The resulting theoretical framework can subsequently be used to develop turbulence-correction methods for misaligned LiDAR setups.
[1] Mann, J., J. Fluid Mech., 273, 141-168 (1994).
Keywords: lidar; turbulence; Mann-model