中国激光, 2018, 45 (1): 0106004, 网络出版: 2018-01-24 复制并引用该论文  本文已被引 1 次  被引通知

图 & 表

图 1. SFLA-LSSVM混合优化算法流程图

Fig. 1. SFLA-LSSVM hybrid optimization algorithm flowchart

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图 2. 不同线宽下多峰Brillouin散射谱拟合曲线图。 (a) ΔvB=40 MHz;(b) ΔvB=60 MHz;(c) ΔvB=80 MHz;(d) ΔvB=100 MHz

Fig. 2. Fitting curves of multi-peak Brillouin scattering spectra under different line width. (a) ΔvB=40 MHz; (b) ΔvB=60 MHz; (c) ΔvB=80 MHz; (d) ΔvB=100 MHz

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图 3. 不同RSN下多峰Brillouin散射谱拟合曲线。 (a) RSN=20 dB;(b) RSN=25 dB;(c) RSN=30 dB

Fig. 3. Fitting curves of multi-peak Brillouin scattering spectra under different RSN. (a) RSN=20 dB; (b) RSN=25 dB; (c) RSN=30 dB

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图 4. 4种算法的多峰Brillouin散射谱拟合曲线。(a) PSO;(b) PSO-LM;(c) GA-BP;(d) SFLA-LSSVM

Fig. 4. Fitting curves of multi-peak Brillouin scattering spectra under four algorithms. (a) PSO; (b) PSO-LM; (c) GA-BP; (d) SFLA-LSSVM

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图 5. 分布式光纤传感Brillouin散射谱检测光路系统图

Fig. 5. Brillouin scattering spectrum system diagram of distributed optical fiber sensing

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图 6. 实验条件下的Brillouin散射谱三维图

Fig. 6. Three-dimensional diagram of Brillouin scattering spectrum under experimental conditions

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图 7. 实验条件下的Brillouin散射谱截面图

Fig. 7. The cross section of the Brillouin scattering spectrum under experimental conditions

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图 8. 不同算法下Brillouin散射谱实验数据拟合曲线图。(a) LSSVM;(b) SFLA-LSSVM

Fig. 8. Fitting curves of multi-peak Brillouin scattering spectra under different algorithms. (a) LSSVM; (b) SFLA-LSSVM

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表 1不同线宽下多峰Brillouin散射谱拟合结果

Table1. Fitting results of multi-peak Brillouin scattering spectra under different line width

RSN /dB Line width /MHz fRMSE Fittingdegree /% BFS error /MHz peak 1 peak 2 peak 3 25 40 0.0267 99.87 1.79 0.51 1.36 60 0.0304 99.87 0.92 1.62 0.52 80 0.0272 99.91 0.75 1.29 1.25 100 0.0218 99.94 0.76 0.17 0.20

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表 24种算法的多峰Brillouin散射谱的拟合结果

Table2. Fitting results of multi-peak Brillouin scattering spectra under four algorithms

Algorithm fRMSE Fittingdegree /% Runningtime /s PSO 0.1955 5.66 6.99 PSO-LM 0.2469 32.97 0.09 GA-BP 0.0529 93.09 12.69 SFLA-LSSVM 0.0439 99.58 5.70

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表 3不同算法下Brillouin散射谱实验数据拟合结果

Table3. Fitting results of multi-peak Brillouin scattering spectra under different algorithms

Parameter LSSVM SFLA-LSSVM fRMSE 0.0035 0.0067 Fitting degree /% 100 99.99 BFS error in peak 1 /MHz 1.91 1.38 BFS error in peak 2 /MHz 0.42 0.18

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张燕君, 金培俊, 付兴虎, 张芳草, 侯姣茹, 徐金睿. 基于SFLA-LSSVM算法的多峰Brillouin散射谱的特征提取[J]. 中国激光, 2018, 45(1): 0106004. Zhang Yanjun, Jin Peijun, Fu Xinghu, Zhang Fangcao, Hou Jiaoru, Xu Jinrui. Feature Extraction of Multi-peak Brillouin Scattering Spectrum Based on SFLA-LSSVM Algorithm[J]. Chinese Journal of Lasers, 2018, 45(1): 0106004.