Atmospheric effects on microphone array analysis of aircraft vortex sound

Wassaf, Hadi; Harding, J. A.; Wang, Frank; John A. Volpe National Transportation Systems Center (U.S.); L3 Communications, Billerica, Mass

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Atmospheric effects on microphone array analysis of aircraft vortex sound

2006-05-08
By Wassaf, Hadi ; Harding, J. A. ; Wang, Frank

[PDF-453.52 KB]

English

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Creators:

Wassaf, Hadi ; Harding, J. A. ; Wang, Frank

Wassaf, Hadi ; Harding, J. A. ; Wang, Frank Less -
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.) ; L3 Communications, Billerica, Mass

John A. Volpe National Transportation Systems Center (U.S.) ; L3 Communications, Billerica, Mass Less -
Subject/TRT Terms:

[+]

Acoustic Emission Microphones Phased Arrays Sound Vortices
Publication/ Report Number:

AIAA 2006-2539
Resource Type:

Proceedings
Corporate Publisher:

American Institute of Aeronautics and Astronautics
NTL Classification:

NTL-AVIATION-AVIATION;NTL-AVIATION-Aviation Energy and Environment;
Abstract:

This paper provides the basis of a comprehensive analysis of vortex sound propagation

through the atmosphere in order to assess real atmospheric effects on acoustic array

processing. Such effects may impact vortex localization accuracy and detection probability

over longer distances. The paper shows that propagation through the atmosphere can

significantly alter the propagation time of the rays from the source to the receiver from that

which would be experienced in an ambient atmosphere. More importantly, it can also change

the delay time between microphones on which the array processing is based. Implications of

these results on the design and resolution of microphone arrays are discussed.
Format:

PDF
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:0b7188ea1d0ae8b980f889251bd6788df0545dac27091617c4978217175b59f7
Download URL:

https://rosap.ntl.bts.gov/view/dot/8954/dot_8954_DS1.pdf
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Atmospheric effects on microphone array analysis of aircraft vortex sound

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