期刊
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
卷 177, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2021.106109
关键词
LIBS spectra line fitting; Voigt profile; ChemCam; SuperCam; Perseverance
类别
资金
- National Aeronautics and Space Administration (NASA) [NNX15AP84A]
This research addresses a bottleneck in processing large amounts of LIBS data by automating the fitting of emission lines in a typical LIBS spectrum. By utilizing the second derivative of the spectrum and a divide and conquer approach, the study successfully fitted 625 lines in a Martian ChemCam spectrum.
This work addresses a bottleneck usually encountered in the processing of large amounts of LIBS data. It shows how the fitting of emission lines in a typical LIBS spectrum can be automated. This is done by exploiting the second derivative of the spectrum to obtain reasonable fitting parameter estimates that, together with a divide and conquer approach, can be used to fit large numbers of lines in a crowded spectrum without user intervention and executed within a reasonable timeframe. As a demonstration, we have successfully fit Voigt profiles to 625 lines in a Martian ChemCam spectrum.
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