Research on Comparison and Evaluation Studies of Several Smoothing Denoising Method Based on γ-ray Spectrum Detector
Jian-Feng He1,2, Fang Fang1, Yao-Zong Yang1, Yue-Shun He2, Bin Tang2
(1. College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China;2. Key Laboratory ofRadioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Nanchang 330013, China)
Abstract:
The extraction of spectral parameters is very difficult because of the limited energy resolution for NaI(TI) gamma-ray detectors. For statistical fluctuation of radioactivity under complex environment, some smoothing filtering methods are proposed to solve the problem. These methods include adopting method of arithmetic moving average, center of gravity, least squares of polynomial, slide converter of discrete funcion convolution etc. The process of spectrum data is realized, and the results are assessed in H/FWHM(Peak High/Full Width at Half Maximum) and peak area based on the Matlab programming. The results indicate that different methods smoothed spectrum have respective superiority in different ergoregion, but the Gaussian function theory in discrete function convolution slide method is used to filter the complex γ-spectrum on Embedded system platform, and the statistical fluctuation of γ-spectrum is filtered well.
Key words: γ-spectrum data-processing smoothing denoising method comparison and evaluation matlab programming
DOI：10.11916/j.issn.1005-9113.2013.02.002
Clc Number:TN91
Fund:
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Research on Comparison and Evaluation Studies of Several Smoothing Denoising Method Based on γ-ray S
本站小编 哈尔滨工业大学/2019-10-24
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