What question did this study set out to answer?

To develop a high-precision hyperspectral LiDAR system combining millimeter-level 3D distance ranging and spectral reflectance mapping using a frequency-comb-broadened supercontinuum source.

September 12, 2023Optics ExpressOpen Access

Supercontinuum-based hyperspectral LiDAR for precision laser scanning

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Authors

PRPabitro Ray DSDavid Salido-Monzú SCSandro L. Camenzind

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Overview

Experimental evaluation demonstrates sub-0.1 mm ranging precision up to 50 meters using supercontinuum hyperspectral LiDAR, highlighting potential for automated material classification.

Key Points

To develop a high-precision hyperspectral LiDAR system combining millimeter-level 3D distance ranging and spectral reflectance mapping using a frequency-comb-broadened supercontinuum source.
Generated a supercontinuum output spanning 570–970 nm coherently broadened from a 780 nm optical frequency comb.
Measured distances by monitoring the differential phase delay of intermode beat notes via direct photodetection, while capturing backscattered spectra using a CCD spectrometer with 0.16 nm resolution.
Evaluated distance precision against a reference interferometer at ranges up to 50 m and performed material classification on 3D point clouds using a linear support vector machine.
Achieved a distance measurement precision below 0.1 mm for stand-off ranges up to 50 m on a diffuse target with approximately 89% reflectance.
Yielded a relative ranging accuracy on the order of 10^-5 compared to a reference interferometer for distances up to 50 m.
Demonstrated automated material classification within 3D point clouds based on reconstructed spectral reflectance profiles.

Cite This Study

Ray et al. (2023) studied this question.

synapsesocial.com/papers/6a9e7f2cdff2fec06dacb79b https://doi.org/10.1364/oe.498576

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September 12, 2023Optics ExpressOpen Access

Supercontinuum-based hyperspectral LiDAR for precision laser scanning

View Full Paper

Ask AI

Bookmark

Authors

PRPabitro Ray DSDavid Salido-Monzú SCSandro L. Camenzind

Discussion

Member takes

Overview

Experimental evaluation demonstrates sub-0.1 mm ranging precision up to 50 meters using supercontinuum hyperspectral LiDAR, highlighting potential for automated material classification.

Key Points

To develop a high-precision hyperspectral LiDAR system combining millimeter-level 3D distance ranging and spectral reflectance mapping using a frequency-comb-broadened supercontinuum source.
Generated a supercontinuum output spanning 570–970 nm coherently broadened from a 780 nm optical frequency comb.
Measured distances by monitoring the differential phase delay of intermode beat notes via direct photodetection, while capturing backscattered spectra using a CCD spectrometer with 0.16 nm resolution.
Evaluated distance precision against a reference interferometer at ranges up to 50 m and performed material classification on 3D point clouds using a linear support vector machine.
Achieved a distance measurement precision below 0.1 mm for stand-off ranges up to 50 m on a diffuse target with approximately 89% reflectance.
Yielded a relative ranging accuracy on the order of 10^-5 compared to a reference interferometer for distances up to 50 m.
Demonstrated automated material classification within 3D point clouds based on reconstructed spectral reflectance profiles.

Cite This Study

Ray et al. (2023) studied this question.

synapsesocial.com/papers/6a9e7f2cdff2fec06dacb79b https://doi.org/10.1364/oe.498576

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