Toward high-quality X-59 sonic thump measurements

• Autores: Mark C. Anderson, Alexandra Loubeau, J. Taggart Durrant, Kent L. Gee
• Localización: Noise Control Engineering Journal, ISSN 0736-2501, Vol. 71, Nº. 5, 2023, págs. 372-375
• Idioma: inglés
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• Resumen

  • Brigham Young University has been investigating best practices for recommendation to NASA in upcoming X-59 sonic thump measurements. This preparatory work has focused both on obtaining high-fidelity data and standardizing signal analysis techniques for sonic thumps. Included in the research are topics such as whether to use a ground-based or elevated microphone, how to use low-noise microphones and still recover high-fidelity data at low frequencies, and estimating the uncertainty in a given measurement due to local atmospheric turbulence effects. Also included is a study of windowing techniques, zero padding, and the removal of high-frequency ambient noise contamination.