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Effect of pulse averaging on sonic anemometer spectra

Effect of pulse averaging on sonic anemometer spectra
Effect of pulse averaging on sonic anemometer spectra
Recent analysis of high quality Solent sonic anemometer spectra revealed a frequency-dependent systematic underestimation of the spectral levels with a minimum at about three-quarters of the Nyquist frequency. It is shown that this is due to the eightfold pulse average with which the Solent sonic achieves its nominal sampling frequency of 21 Hz, combined with the effects of aliasing. An explicit correction curve is developed.
0739-0572
181-184
Henjes, Katja
4333b6f7-aefc-441b-bb1c-78f8fc25f47f
Taylor, Peter K.
d29e0494-9f67-4bc8-aee4-aa90a2885067
Yelland, Margaret J.
3b2e2a38-334f-430f-b110-253a0a835a07
Henjes, Katja
4333b6f7-aefc-441b-bb1c-78f8fc25f47f
Taylor, Peter K.
d29e0494-9f67-4bc8-aee4-aa90a2885067
Yelland, Margaret J.
3b2e2a38-334f-430f-b110-253a0a835a07

Henjes, Katja, Taylor, Peter K. and Yelland, Margaret J. (1999) Effect of pulse averaging on sonic anemometer spectra. Journal of Atmospheric and Oceanic Technology, 16 (1), 181-184. (doi:10.1175/1520-0426(1999)016<0181:EOPAOS>2.0.CO;2).

Record type: Article

Abstract

Recent analysis of high quality Solent sonic anemometer spectra revealed a frequency-dependent systematic underestimation of the spectral levels with a minimum at about three-quarters of the Nyquist frequency. It is shown that this is due to the eightfold pulse average with which the Solent sonic achieves its nominal sampling frequency of 21 Hz, combined with the effects of aliasing. An explicit correction curve is developed.

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Published date: January 1999

Identifiers

Local EPrints ID: 55206
URI: http://eprints.soton.ac.uk/id/eprint/55206
ISSN: 0739-0572
PURE UUID: fd20b62a-1e31-4f65-adbe-ab1920c445b3

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Date deposited: 24 Jul 2008
Last modified: 02 Dec 2019 19:23

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Author: Katja Henjes
Author: Peter K. Taylor
Author: Margaret J. Yelland

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