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基于HMM双重模型的伽马能谱漂移模拟 |
黄洪全,方方,龚迪琛,丁卫撑 |
成都理工大学 核技术与自动化工程学院,四川 成都610059 |
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THE SIMULATION OF γ SPECTRUMSHIFTING BASED ON HMM DUAL MODEL |
HUANG Hong-Quan, FANG Fang, GONG Di-Chen, DING Wei-Cheng |
School of Nuclear Technology and Automation, Chengdu University of Technology, Chengdu610059, China |
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摘要 结合放射性测量中的能谱统计特性及漂移特点,提出了采用hidden Markov models对能谱漂移进行模拟的双重模型方法。采用
Gaussian mixture model对能谱的短时瞬态特性进行描述,转化为参数化模型;采用HMM状态转移对能谱测量中的能谱漂移条件进行模拟
,实现Gaussian mixture model的参数调整。实例表明,该方法可以灵活地调整参数以满足能谱漂移模拟的多样性要求,是一种性能良好
的参数化模拟方法。
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Abstract: Based on statistical characteristics of energy spectrum and spectrumshifting features in spectrometry, the
authors applied the dual model of Hidden Markov Models to the simulation of spectrumshifting. Transient
characteristics of energy spectrum were described and then transformed into a parametric model by Gaussian Mixture Mode.
The conditions of spectrumshifting in the measurement of energy spectrum were simulated by state transition of Hidden
Markov Models, and then the parameters of Gaussian mixture model were adjusted. Practical application shows that these
parameters can be adjusted flexibly by this method to meet the various requirements in simulation of energy spectrum
shifting, and hence this method is a parametric simulation method with good performance. |
收稿日期: 2009-11-04
出版日期: 2010-08-10
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基金资助: 国家教育部博士点基金(20060616010)资助 |
通讯作者:
黄洪全(1973-),男,博士生,研究方向:核勘查与信息处理,DSP技术。
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引用本文: |
黄洪全, 方方, 龚迪琛, 丁卫撑. 基于HMM双重模型的伽马能谱漂移模拟[J]. 物探与化探, 2010, 34(4): 482-484.
HUANG Hong-Quan, FANG Fang, GONG Di-Chen, DING Wei-Cheng.
THE SIMULATION OF γ SPECTRUMSHIFTING BASED ON HMM DUAL MODEL. Geophysical and Geochemical Exploration, 2010, 34(4): 482-484.
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链接本文: |
https://www.wutanyuhuatan.com/CN/
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https://www.wutanyuhuatan.com/CN/Y2010/V34/I4/482
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