Absolute Calibration Techniques for UV Spectroscopy Based Upon Platinum Emission Line Spectra.

摘要

Imaging Spectrometry requires precise knowledge or wavelength in order to perform various spectral analyses. This thesis project was tasked with performing wavelength calibration as part or the ongoing development or the Naval Postgraduate School's Lineate Imaging Near Ultraviolet Spectrometer (LINUS). This calibration was necessary for the ability or LINUS to detect, to classify, sod to quantify several different chemical species by observation over the near-ultraviolet wavelength band or 200 to 400 mm. Experiments were conducted to detect diffracted emission lines from a platinum hollow cathode lamp by using the LINUS optical train sod rive different UV filters. A Matlab program was developed to compare the catalogued wavelengths or this known ultraviolet source with the emission lime positions observed on the LINUS detector. Affine transformation and cross-correlation or the data produced wavelength calibration curves for the LINUS detector in each or the rive associated UV wavelength regions.