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Hugo RJ, Nowlin SR, Hahn IL, et al. Application of an acoustic noise removal method to aircraft-based atmospheric temperature measurements. J Acoust Soc Am. 2003;113(1):178-84doi: 10.1121/1.1528591.
Hugo, R. J., Nowlin, S. R., Hahn, I. L., Eaton, F. D., & McCrae, K. A. (2003). Application of an acoustic noise removal method to aircraft-based atmospheric temperature measurements. The Journal of the Acoustical Society of America, 113(1), 178-84. https://doi.org/10.1121/1.1528591
Hugo, Ronald J, et al. "Application of an acoustic noise removal method to aircraft-based atmospheric temperature measurements." The Journal of the Acoustical Society of America vol. 113,1 (2003): 178-84. doi: https://doi.org/10.1121/1.1528591
Hugo RJ, Nowlin SR, Hahn IL, Eaton FD, McCrae KA. Application of an acoustic noise removal method to aircraft-based atmospheric temperature measurements. J Acoust Soc Am. 2003 Jan;113(1):178-84. doi: 10.1121/1.1528591. PMID: 12558258.
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J Acoust Soc Am. 2003 Jan;113(1):178-84. doi: 10.1121/1.1528591.

Application of an acoustic noise removal method to aircraft-based atmospheric temperature measurements.

The Journal of the Acoustical Society of America

Ronald J Hugo, Scott R Nowlin, Ila L Hahn, Frank D Eaton, Kim A McCrae

Affiliations

  1. University of Calgary, Calgary, Alberta 72N 1N4, Canada. [email protected]

PMID: 12558258 DOI: 10.1121/1.1528591

Abstract

An acoustic noise removal method is used to reject engine acoustical disturbances from aircraft-based atmospheric temperature measurements. Removal of engine noise from atmospheric temperature measurements allows a larger wave number range to be fit while quantifying the magnitude of atmospheric temperature turbulence. The larger wave number range was found to result in a more statistically certain spectral slope estimate, with up to a 50% reduction in the standard deviation of measured spectral slopes. The noise removal technique was found to break down under conditions of weak atmospheric temperature turbulence where the engine acoustical disturbance can be several orders of magnitude larger than atmospheric temperature turbulence.

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