多角度动态光散射加权贝叶斯反演算法

doi:10.19596/j.cnki.1001-246x.7954

计算物理 ›› 2019, Vol. 36 ›› Issue (6): 673-681.DOI: 10.19596/j.cnki.1001-246x.7954

多角度动态光散射加权贝叶斯反演算法

刘玲, 陈淼, 邱健, 彭力, 骆开庆, 韩鹏

华南师范大学物理与电信工程学院, 广东省光电检测仪器工程技术研究中心, 广东广州 510006

收稿日期:2018-09-03 修回日期:2019-01-26 出版日期:2019-11-25 发布日期:2019-11-25
通讯作者: 韩鹏,E-mail:hanpeng@m.scnu.edu.cn
作者简介:刘玲(1994-),女,广西河池,硕士研究生,主要研究多角度动态光散射,E-mail:ll_lingliu@163.com
基金资助:
国家自然科学基金项目（61975058）、广东省自然科学基金项目（2014A030313433）及广州市科技计划项目（201704020137，201707010485）资助

Weighted Bayesian Inversion Method in Multi-angle Dynamic Light Scattering Measurements

LIU Ling, CHEN Miao, QIU Jian, PENG Li, LUO Kaiqing, HAN Peng

School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, Guangdong 510006, China

Received:2018-09-03 Revised:2019-01-26 Online:2019-11-25 Published:2019-11-25

摘要/Abstract

摘要： 研究加权贝叶斯算法在多角度动态光散射法测量单峰分布颗粒体系的颗粒粒度分布中的应用.采用颗粒粒度信息分布为底数、调节参数为指数的权重系数给各个角度下的光强自相关函数曲线加入不同的权重系数，再利用传统的贝叶斯算法反演.模拟与实验结果表明，加权后的贝叶斯算法能获得分布误差更小的反演结果，有效地抑制了数据噪声的影响，提高颗粒粒度分布反演的准确性.

关键词: 多角度动态光散射, 颗粒粒度分布, 加权贝叶斯反演算法

Abstract: A weighted Bayesian inversion method is proposed for estimation of unimodal particle size distribution in multi-angle dynamic light scattering measurements. Particle size informiation distribution in autocorrelation function is used as base and adjustment parameters as exponent in the weight coefficient. Traditional Bayesian inversion method is recovered. Simulation and experimental data at different noise levels show that weighted Bayesian inversion method obtains inversion results with smaller distribution error. It weakens effectively influence of data noise and improves accuracy of particle size distribution.

Key words: multi-angle dynamic light scattering, particle size distribution, weighted Bayesian inversion

中图分类号:

O436.2

刘玲, 陈淼, 邱健, 彭力, 骆开庆, 韩鹏. 多角度动态光散射加权贝叶斯反演算法[J]. 计算物理, 2019, 36(6): 673-681.

LIU Ling, CHEN Miao, QIU Jian, PENG Li, LUO Kaiqing, HAN Peng. Weighted Bayesian Inversion Method in Multi-angle Dynamic Light Scattering Measurements[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2019, 36(6): 673-681.

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多角度动态光散射加权贝叶斯反演算法

Weighted Bayesian Inversion Method in Multi-angle Dynamic Light Scattering Measurements

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