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| Titel |
Retrieving wind statistics from average spectrum of continuous-wave lidar |
| VerfasserIn |
E. Branlard, A. T. Pedersen, J. Mann, N. Angelou, A. Fischer, T. Mikkelsen, M. Harris, C. Slinger, B. F. Montes |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 6, no. 7 ; Nr. 6, no. 7 (2013-07-15), S.1673-1683 |
| Datensatznummer |
250017920
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| Publikation (Nr.) |
 copernicus.org/amt-6-1673-2013.pdf |
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| Zusammenfassung |
| The aim of this study is to experimentally demonstrate that the
time-average Doppler spectrum of a continuous-wave (cw) lidar is
proportional to the probability density function of the line-of-sight
velocities. This would open the possibility of using cw lidars for
the determination of the second-order atmospheric turbulence
statistics. An atmospheric field campaign and a wind tunnel
experiment are carried out to show that the use of an average Doppler
spectrum instead of a time series of velocities determined from
individual Doppler spectra significantly reduces the differences with
the standard deviation measured using ordinary anemometers, such as
ultra-sonic anemometers or hotwires. The proposed method essentially
removes the spatial averaging effect intrinsic to the cw lidar
systems. |
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