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Deep spectral CNN for laser induced breakdown spectroscopy

Journal Article · · Spectrochimica Acta. Part B, Atomic Spectroscopy
This work proposes a spectral convolutional neural network (CNN) operating on laser induced breakdown spectroscopy (LIBS) signals to learn to (1) disentangle spectral signals from the sources of sensor uncertainty (i.e., pre-process) and (2) get qualitative and quantitative measures of chemical content of a sample given a spectral signal (i.e., calibrate). Once the spectral CNN is trained, it can accomplish either task through a single feed-forward pass, with real-time benefits and without any additional side information requirements including dark current, system response, temperature and detector-to-target range. Our experiments demonstrate that the proposed method outperforms the existing approaches used by the Mars Science Lab for pre-processing and calibration for remote sensing observations from the Mars rover, ‘Curiosity’.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1770112
Alternate ID(s):
OSTI ID: 1815219
Report Number(s):
LA-UR--20-28315
Journal Information:
Spectrochimica Acta. Part B, Atomic Spectroscopy, Journal Name: Spectrochimica Acta. Part B, Atomic Spectroscopy Vol. 178; ISSN 0584-8547
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (13)

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Improved accuracy in quantitative laser-induced breakdown spectroscopy using sub-models journal March 2017
Recalibration of the Mars Science Laboratory ChemCam instrument with an expanded geochemical database journal March 2017
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Beyond a Gaussian Denoiser: Residual Learning of Deep CNN for Image Denoising journal July 2017
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