Enhanced nearfield acoustic holography for larger distances of reconstructions using fixed parameter Tikhonov regularization

Journal Article · Fri Jul 01 00:00:00 EDT 2016 · Journal of the Acoustical Society of America

DOI:https://doi.org/10.1121/1.4954757· OSTI ID:1389827

Chelliah, Kanthasamy; Raman, Ganesh G.; Muehleisen, Ralph T.

This paper evaluates the performance of various regularization parameter choice methods applied to different approaches of nearfield acoustic holography when a very nearfield measurement is not possible. For a fixed grid resolution, the larger the hologram distance, the larger the error in the naïve nearfield acoustic holography reconstructions. These errors can be smoothed out by using an appropriate order of regularization. This study shows that by using a fixed/manual choice of regularization parameter, instead of automated parameter choice methods, reasonably accurate reconstructions can be obtained even when the hologram distance is 16 times larger than the grid resolution.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Building Technologies
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1389827
• Journal Information: Journal of the Acoustical Society of America, Vol. 140, Issue 1; ISSN 0001-4966
• Publisher: Acoustical Society of America
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS