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    A new Finnish Geospatial Research Institute hyperspectral LiDAR (FGI HSL) offers improved portability and accuracy. This advanced terrestrial LiDAR system enables novel underground mining applications and detailed rock spectral analysis.

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    Area of Science:

    • Geospatial Science
    • Geophysics
    • Spectroscopy

    Background:

    • Multichannel terrestrial LiDARs, like the FGI HSL, integrate 3D topography with spectral data.
    • Previous supercontinuum-based HSL instruments faced limitations in portability and sensitivity, hindering widespread application.
    • Advancements in LiDAR technology are crucial for expanding its use in challenging environments.

    Purpose of the Study:

    • To introduce a newly designed, robust field-ready Finnish Geospatial Research Institute hyperspectral LiDAR (FGI HSL).
    • To detail the improved pulse digitizing scheme and assess the system's enhanced measuring accuracy.
    • To demonstrate novel applications, including underground mine surveys and detailed rock spectral analysis.

    Main Methods:

    • Development of a new, compact, and robust field design for the FGI HSL.
    • Implementation of an advanced pulse digitizing scheme to enhance data acquisition.
    • Performance assessment of the new LiDAR system and preliminary algorithm development.

    Main Results:

    • The redesigned FGI HSL exhibits significantly improved measuring accuracy and portability.
    • The system successfully conducted measurements in underground mine environments.
    • Minute spectral differences in various rock types were effectively detected.

    Conclusions:

    • The enhanced FGI HSL system overcomes previous limitations, enabling practical applications previously deemed impractical.
    • The new LiDAR design facilitates detailed geological surveys in challenging subterranean settings.
    • This technology holds significant potential for mineral exploration and geological characterization.