Abstract
Wind energy development requires accurate resource assessment at increasing turbine hub heights. Tall meteorological masts are costly and logistically complex, making remote sensing technologies like SoDAR a practical alternative—provided they are rigorously validated. This study validates a Vaisala Triton SoDAR against a 120 m met mast over 1 year at the Kayathar site in India. Correlation analysis of 10-minute records at 60 m, 90 m, and 120 m revealed strong agreement in wind speed (R2 > 0.95) and direction (R2 > 0.99), with minor deviations at greater heights. A comparison of Power Law and Logarithmic Law extrapolation methods showed comparable results below 60 m, but notable divergence above that level, highlighting the need for height-dependent wind shear coefficients. The findings offer practical guidance for wind measurement and prediction, with direct relevance to modern tall wind turbine deployments.
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