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Proceedings Paper

Volna-3 sodar measurements of moments of wind velocity field and estimates of measurement errors
Author(s): V. A. Fedorov
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Paper 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.

Paper Details

Date Published: 29 December 2000
PDF: 9 pages
Proc. SPIE 4341, Seventh International Symposium on Atmospheric and Ocean Optics, (29 December 2000); doi: 10.1117/12.411961
Show Author Affiliations
V. A. Fedorov, Institute of Atmospheric Optics (Russia)


Published in SPIE Proceedings Vol. 4341:
Seventh International Symposium on Atmospheric and Ocean Optics

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