Journal ArticleDOI
Deconvolution of Sources in Aeroacoustic Images from Phased Microphone Arrays Using Linear Programming
Robert P. Dougherty,Rakesh C. Ramachandran,Ganesh Raman +2 more
- Vol. 12, pp 699-717
TLDR
A new deconvolution strategy for aeroacoustic beamforming based on linear programming (LP) is introduced and results of an aeroACoustic test show that it produces virtually the same results as DAMAS in much less time.Abstract:
A new deconvolution strategy for aeroacoustic beamforming based on linear programming (LP) is introduced. Results of an aeroacoustic test show that it produces virtually the same results as DAMAS in much less time. DAMAS, DAMAS2 and LP display superresolution, which is expressed in terms of the Sparrow resolution limit from optics. CLEAN-SC and TIDY did not achieve superresolution in the test, but did produce higher dynamic range than DAMAS and LP at high frequency.read more
Citations
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Journal ArticleDOI
A review of acoustic imaging methods using phased microphone arrays
Roberto Merino-Martínez,Pieter Sijtsma,Mirjam Snellen,Thomas Ahlefeldt,Jérôme Antoni,Christopher J. Bahr,D. Blacodon,Daniel Ernst,A. Finez,S. Funke,Thomas F. Geyer,Stefan Haxter,Gert Herold,Xun Huang,William M. Humphreys,Quentin Leclere,A.M.N. Malgoezar,Ulf Michel,Thomas Padois,A. Pereira,Christophe Picard,Ennes Sarradj,Henri Siller,Dick G. Simons,Carsten Spehr +24 more
TL;DR: This paper provides a review of the most well-known and state-of-the-art acoustic imaging methods and recommendations on when to use them, as well as a broad overview for general aeroacoustic experts.
Journal ArticleDOI
Functional Beamforming Applied to Imaging of Flyover Noise on Landing Aircraft
TL;DR: In this paper, the computational time required for the functional beamforming is approximately the same as that for the conventional frequency domain beamformer and, in general, notably shorter than those of the deconvolution methods.
Journal ArticleDOI
Slat Noise: Aeroacoustic Beamforming in Closed-Section Wind Tunnel with Numerical Comparison
TL;DR: In this article, acoustic experimental results on the slat region of a two-dimensional high-lift model were reported, where conventional beamforming combined with deconvolution technique was used.
Journal ArticleDOI
Enhanced HR-CLEAN-SC for resolving multiple closely spaced sound sources:
S. Luesutthiviboon,A.M.N. Malgoezar,R. Merino Martinez,Mirjam Snellen,Pieter Sijtsma,Dick G. Simons +5 more
TL;DR: In this paper, the authors proposed an enhanced version of the HR-CLEAN-SC algorithm which benefits from low maximum sidelobe level array design, and applied it to four synthetic sound sources.
References
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Journal ArticleDOI
Multiple emitter location and signal parameter estimation
TL;DR: In this article, a description of the multiple signal classification (MUSIC) algorithm, which provides asymptotically unbiased estimates of 1) number of incident wavefronts present; 2) directions of arrival (DOA) (or emitter locations); 3) strengths and cross correlations among the incident waveforms; 4) noise/interference strength.
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Solving least squares problems
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Journal ArticleDOI
Solving Least Squares Problems
Journal ArticleDOI
Robust adaptive beamforming
TL;DR: It is shown that a simple scaling of the projection of tentative weights, in the subspace orthogonal to the linear constraints, can be used to satisfy the quadratic inequality constraint.
Journal Article
APERTURE SYNTHESIS WITH A NON-REGULAR DISTRIBUTION OF INTERFEROMETER BASELINES. Commentary
J. A. Högbom,T. J. Cornwell +1 more
TL;DR: In this article, the authors present CLEAN, a method for high-resolution radio interferometry that avoids the effects of the prominent and extended sidelobe patterns of the corresponding synthesized beam.