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29 December 2000 Volna-3 sodar measurements of moments of wind velocity field and estimates of measurement errors
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Proceedings Volume 4341, Seventh International Symposium on Atmospheric and Ocean Optics; (2000) https://doi.org/10.1117/12.411961
Event: 7th International Symposium on Atmospheric and Ocean Optics, 2000, Tomsk, Russian Federation
Abstract
The algorithms for determining the first four moments, their standard deviations, asymmetry and excess coefficients of wind velocity components (radial Vr and orthogonal Vort components, absolute value of the horizontal wind Vh and its direction (phi) ) by the Volna-3 sodar are described. The quality of estimation of these moments heavily depends on the quality of sodar measurements of instantaneous radial components Vr(i) and the accuracy of determination of their centers of distribution. So, to reject possible anomalous values, the corresponding procedure of iteration censorship of data is applied to Vr(i) with the further use of the adaptive averaging procedure. For the Vort, Vh, and (phi) two methods of estimation are considered. The first method is based on calculation of their instantaneous values, and the further processing of Vort and Vh components is similar to that of the radial components Vr. The moments of (phi) are obtained using statistical methods. The second method is based on the use of pre-calculated moments of Vr and their additional statistical characteristics. To objectively estimate the degree of certainty of the obtained information, the point (standard errors) and interval (90% confidence intervals) estimates of random measurement errors are calculated.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
V. A. Fedorov "Volna-3 sodar measurements of moments of wind velocity field and estimates of measurement errors", Proc. SPIE 4341, Seventh International Symposium on Atmospheric and Ocean Optics, (29 December 2000); https://doi.org/10.1117/12.411961
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