Modified Fourier-Hankel method based on analysis of errors in Abel inversion using Fourier transform techniques.
Errors in discrete Abel inversion methods using Fourier transform techniques have been analyzed. The Fourier expansion method is very accurate but sensitive to noise. The Fourier-Hankel method has a significant systematic negative deviation, which increases with the radius; inversion error of the method can be reduced by adjusting the value of a factor. With a decrease of the factor both methods show a noise filtering property. Based on the analysis, a modified Fourier-Hankel method that is accurate, computationally efficient, and has the ability to filter noise in the inversion process is proposed for applying to experimental data.
Ma
Shuiliang
S
State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China. shlgma@126.com
Gao
Hongming
H
Wu
Lin
L