Lorentzian型布里渊频谱特征提取时模型的影响

赵丽娟; 李永倩; 徐志钮

doi:10.3788/IRLA201645.0522002

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Lorentzian型布里渊频谱特征提取时模型的影响

赵丽娟, 李永倩, 徐志钮

文章导航 > 红外与激光工程 > 2016 > 45(5): 522002-0522002(6)

赵丽娟, 李永倩, 徐志钮. Lorentzian型布里渊频谱特征提取时模型的影响[J]. 红外与激光工程, 2016, 45(5): 522002-0522002(6). doi: 10.3788/IRLA201645.0522002

引用本文:

赵丽娟, 李永倩, 徐志钮. Lorentzian型布里渊频谱特征提取时模型的影响[J]. 红外与激光工程, 2016, 45(5): 522002-0522002(6). doi: 10.3788/IRLA201645.0522002

Zhao Lijuan, Li Yongqian, Xu Zhiniu. Influence of optimization model on parameter extraction in Lorentzian Brillouin scattering spectrum[J]. Infrared and Laser Engineering, 2016, 45(5): 522002-0522002(6). doi: 10.3788/IRLA201645.0522002

Citation:

Zhao Lijuan, Li Yongqian, Xu Zhiniu. Influence of optimization model on parameter extraction in Lorentzian Brillouin scattering spectrum[J]. Infrared and Laser Engineering, 2016, 45(5): 522002-0522002(6). doi: 10.3788/IRLA201645.0522002

Lorentzian型布里渊频谱特征提取时模型的影响

doi: 10.3788/IRLA201645.0522002

1.
华北电力大学电子与通信工程系,河北保定 071003;
2.
华北电力大学河北省输变电设备安全防御重点实验室,河北保定 071003

基金项目:

河北省自然科学基金(F2015502059);河北省教育厅项目(Z2014182);中央高校基本科研业务费专项基金(2016MS101)

详细信息

作者简介:
赵丽娟(1981-),女,讲师,硕士,主要从事光纤通信与传感技术方面的研究。

通讯作者: 徐志钮(1979-),男,副教授,博士,研究方向为电力电容器建模及性能优化和光纤传感及在电力系统中的应用。Email:wzcnjxx@sohu.com

中图分类号: TN29

Influence of optimization model on parameter extraction in Lorentzian Brillouin scattering spectrum

1.
Department of Electronics &Communication Engineering,North China Electric Power University,Baoding 071003,China;
2.
Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Baoding 071003,China

摘要: 为了在提取Lorentzian型布里渊频谱特征时选择最佳模型,以线性最小二乘法和非线性最小二乘法构造的目标函数为研究对象,系统地比较目标函数构造对频谱特征提取的影响。数值产生了不同信噪比、扫描频率间隔、g0、vB和vB的布里渊信号,比较了两种模型得到的频谱特征参数的准确性和计算耗时,并用真实布里渊散射信号进行了验证。结果表明:在不含干扰的理想状态下两种模型都能达到非常高的精度,随着噪声含量/扫描频率间隔的增加两种模型的准确性都下降,但线性模型明显大于非线性模型,实际时应采用非线性模型。实验测量的布里渊散射谱信号验证了分析结果的正确性。
- 布里渊散射谱 /
- 参数提取 /
- 最小二乘模型 /
- 温度/应变测量
Abstract: To select the best optimization model on parameter extraction in Lorentzian Brillouin scattering spectrum and improve the accuracy of the temperature or strain measurement, taking the objective functions based on linear and nonlinear least-squares fits as the study objects, the influence of the optimization model on the accuracy of the parameter extraction was systematically investigated. Brillouin scattering spectrum signals with different signal-to-noise ratios, scanned frequency intervals, g0, vB and vB were numerically generated. The accuracy and computing time of parameter extraction and temperature/strain measurement of the linear model were compared to that of the nonlinear model. The results reveal that, if the signal is ideal and free from noise, the two models are free of any errors. The errors of the two models will increase with increasing in noise level/scanned frequency interval. However, the error of the nonlinear model is appreciably lower than that of the linear one. In engineering practice the nonlinear model should be selected. The analysis is validated with the experimental Brillouin scattering spectrum signals.
- Brillouin scattering spectrum /
- parameter extraction /
- least-squares model /
- temperature/strain measurement

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Lorentzian型布里渊频谱特征提取时模型的影响

doi: 10.3788/IRLA201645.0522002

1. 华北电力大学电子与通信工程系,河北保定 071003;

2. 华北电力大学河北省输变电设备安全防御重点实验室,河北保定 071003

作者简介:
赵丽娟(1981-),女,讲师,硕士,主要从事光纤通信与传感技术方面的研究。

通讯作者: 徐志钮(1979-),男,副教授,博士,研究方向为电力电容器建模及性能优化和光纤传感及在电力系统中的应用。Email:wzcnjxx@sohu.com

收稿日期: 2015-11-14
修回日期: 2015-12-27
刊出日期: 2016-05-25

基金项目:

河北省自然科学基金(F2015502059);河北省教育厅项目(Z2014182);中央高校基本科研业务费专项基金(2016MS101)

中图分类号: TN29

关键词:

摘要: 为了在提取Lorentzian型布里渊频谱特征时选择最佳模型,以线性最小二乘法和非线性最小二乘法构造的目标函数为研究对象,系统地比较目标函数构造对频谱特征提取的影响。数值产生了不同信噪比、扫描频率间隔、g0、vB和vB的布里渊信号,比较了两种模型得到的频谱特征参数的准确性和计算耗时,并用真实布里渊散射信号进行了验证。结果表明:在不含干扰的理想状态下两种模型都能达到非常高的精度,随着噪声含量/扫描频率间隔的增加两种模型的准确性都下降,但线性模型明显大于非线性模型,实际时应采用非线性模型。实验测量的布里渊散射谱信号验证了分析结果的正确性。

English Abstract

Influence of optimization model on parameter extraction in Lorentzian Brillouin scattering spectrum

1. Department of Electronics &Communication Engineering,North China Electric Power University,Baoding 071003,China;

2. Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Baoding 071003,China

Received Date: 2015-11-14
Rev Recd Date: 2015-12-27
Publish Date: 2016-05-25

Keywords:

Abstract: To select the best optimization model on parameter extraction in Lorentzian Brillouin scattering spectrum and improve the accuracy of the temperature or strain measurement, taking the objective functions based on linear and nonlinear least-squares fits as the study objects, the influence of the optimization model on the accuracy of the parameter extraction was systematically investigated. Brillouin scattering spectrum signals with different signal-to-noise ratios, scanned frequency intervals, g0, vB and vB were numerically generated. The accuracy and computing time of parameter extraction and temperature/strain measurement of the linear model were compared to that of the nonlinear model. The results reveal that, if the signal is ideal and free from noise, the two models are free of any errors. The errors of the two models will increase with increasing in noise level/scanned frequency interval. However, the error of the nonlinear model is appreciably lower than that of the linear one. In engineering practice the nonlinear model should be selected. The analysis is validated with the experimental Brillouin scattering spectrum signals.

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Lorentzian型布里渊频谱特征提取时模型的影响

doi: 10.3788/IRLA201645.0522002

作者简介: 赵丽娟(1981-),女,讲师,硕士,主要从事光纤通信与传感技术方面的研究。

通讯作者: 徐志钮(1979-),男,副教授,博士,研究方向为电力电容器建模及性能优化和光纤传感及在电力系统中的应用。Email:wzcnjxx@sohu.com

Influence of optimization model on parameter extraction in Lorentzian Brillouin scattering spectrum

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出版历程

Lorentzian型布里渊频谱特征提取时模型的影响

doi: 10.3788/IRLA201645.0522002

1. 华北电力大学 电子与通信工程系,河北 保定 071003; 2. 华北电力大学 河北省输变电设备安全防御重点实验室,河北 保定 071003

作者简介: 赵丽娟(1981-),女,讲师,硕士,主要从事光纤通信与传感技术方面的研究。

通讯作者: 徐志钮(1979-),男,副教授,博士,研究方向为电力电容器建模及性能优化和光纤传感及在电力系统中的应用。Email:wzcnjxx@sohu.com

English Abstract

Influence of optimization model on parameter extraction in Lorentzian Brillouin scattering spectrum

1. Department of Electronics &Communication Engineering,North China Electric Power University,Baoding 071003,China; 2. Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Baoding 071003,China

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目录

作者简介:
赵丽娟(1981-),女,讲师,硕士,主要从事光纤通信与传感技术方面的研究。

1. 华北电力大学电子与通信工程系,河北保定 071003;

2. 华北电力大学河北省输变电设备安全防御重点实验室,河北保定 071003

作者简介:
赵丽娟(1981-),女,讲师,硕士,主要从事光纤通信与传感技术方面的研究。

1. Department of Electronics &Communication Engineering,North China Electric Power University,Baoding 071003,China;

2. Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Baoding 071003,China