Multi-planar angular spectrum approach applied to pressure field calculations of spherically focused pistons

Authors

  • Xiaozheng Zeng Dept. of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824
  • James F. Kelly Dept. of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824
  • Robert J. McGough Dept. of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824

Keywords:

Error analysis, Pistons, Pressure measurement, Sampling, Angular spectrum approach (ASA), Cartesian coordinate system, Circular pistons, Pressure fields

Abstract

The application of angular spectrum approach (ASA) on spherically focused circular pistons was analyzed. For a uniform sampling rate and field size errors produced by the ASA vary as a function of depth. The multi-planar ASA was demonstrated for a spherically focused piston with diameter 2a=16cm and radius of curvature R=16cm. The normal evaluated at the center of the spherical shell, which is coincident with z-axis, defines the origin of the Cartesian coordinate system. It was concluded that the multi-planar ASA compensates for the error by adding additional source planes and achieves much greater accuracy.

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Published

2005-09-01

How to Cite

1.
Zeng X, Kelly JF, McGough RJ. Multi-planar angular spectrum approach applied to pressure field calculations of spherically focused pistons. Canadian Acoustics [Internet]. 2005 Sep. 1 [cited 2023 Oct. 4];33(3):104-5. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1766

Issue

Vol. 33 No. 3 (2005)

Section

Proceedings of the Acoustics Week in Canada

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