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Laser & Optoelectronics Progress, Volume. 62, Issue 5, 0530004(2025)

Quantitative Analysis of LIBS of Martian-Like Minerals Based on Feature Fusion

Zhihong Liu* and Yudong Jia
Author Affiliations
  • School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science & Technology University, Beijing 100101, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
    Equations (6)
    References (20)
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    Figures & Tables(10)
    Flow chart of FF-GA-SVR algorithm

    Fig. 1. Flow chart of FF-GA-SVR algorithm

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    Oxide concentration distribution for eight elements in sample

    Fig. 2. Oxide concentration distribution for eight elements in sample

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    Original LIBS

    Fig. 3. Original LIBS

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    Preprocessed LIBS and qualitative analysis results

    Fig. 4. Preprocessed LIBS and qualitative analysis results

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    Relationship between cumulative contribution rate and number of principal components

    Fig. 5. Relationship between cumulative contribution rate and number of principal components

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    Relationship between cross-validation RMSE and number of principal components

    Fig. 6. Relationship between cross-validation RMSE and number of principal components

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    Impact of changes in C and g on prediction accuracy of model

    Fig. 7. Impact of changes in C and g on prediction accuracy of model

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    GA fitness curves

    Fig. 8. GA fitness curves

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    Scatter diagrams of predicted values and actual values of oxide content for each major element corresponding to each model. (a) SiO2; (b) Al2O3; (c) FeOT; (d) MgO; (e) CaO; (f) Na2O; (g) K2O; (h) TiO2

    Fig. 9. Scatter diagrams of predicted values and actual values of oxide content for each major element corresponding to each model. (a) SiO2; (b) Al2O3; (c) FeOT; (d) MgO; (e) CaO; (f) Na2O; (g) K2O; (h) TiO2

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    • Table 1. Comparison of quantitative analysis results of different models

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      Table 1. Comparison of quantitative analysis results of different models

      ElementFF-GA-SVRSK-GA-SVRPLS-GA-SVRPCA-GA-SVRPLSR
      RMSER2RMSER2RMSER2RMSER2RMSER2
      SiO23.040.9834.300.9655.640.9403.640.9753.790.973
      Al2O31.260.9712.420.8921.760.9432.260.9062.390.895
      FeOT1.280.9821.650.9701.680.9681.750.9661.470.976
      MgO1.290.9671.620.9502.220.9061.450.9602.030.921
      CaO1.000.9921.560.9811.430.9841.330.9871.710.978
      Na2O2.320.8693.760.6562.350.8652.890.7972.090.894
      K2O0.360.9610.600.8900.530.9140.370.9590.450.939
      TiO20.150.9630.270.8830.320.8360.190.9400.180.947
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    Zhihong Liu, Yudong Jia. Quantitative Analysis of LIBS of Martian-Like Minerals Based on Feature Fusion[J]. Laser & Optoelectronics Progress, 2025, 62(5): 0530004

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    Paper Information

    Category: Spectroscopy

    Received: Sep. 2, 2024

    Accepted: Nov. 5, 2024

    Published Online: Mar. 3, 2025

    The Author Email:

    DOI:10.3788/LOP241936

    CSTR:32186.14.LOP241936

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology