A Spectral Restoration Method of Interferometric Spectrometer Based on Instrument Characteristic Matrix
A characteristic matrix and spectral restoration technology, applied in the field of spectral analysis, can solve problems such as difficult to completely eliminate phase errors, achieve the effect of improving authenticity and accuracy, reducing processing links, and improving authenticity
Active Publication Date: 2018-04-13
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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[0006] (c) The existing phase correction algorithm is difficult to completely eliminate the influence of phase error
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[0041] The following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0042] The embodiment of the present invention provides a method for spectrum restoration of an interference spectrometer based on an instrument characteristic matrix. The principle is to construct an instrument characteristic matrix and use it to establish a matrix equation for spectrum restoration. This principle can be used to obtain high-precision spectra, so that substances can be subjected to fine spectral analysis. It is suitable for the...
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The invention discloses an interferometer spectrometer spectrum recovery method based on an instrument characteristic matrix. The instrument characteristic matrix established by adopting the method considers different errors and factors which possibly cause errors, and a solution of an equation set established by using the instrument characteristic matrix is inevitably more accurate than the traditional spectrum recovery result. As long as an interferometer spectrometer system is fixed, and no significant change occurs in the experimental environment, an instrument characteristic matrix and an error matrix of the equation set do not change once being determined by adopting a calibration method and the like, interference data just needs to be acquired and substituted into a disclosed fixed equation set solution formula for calculation when carrying out spectrum recovery in an experiment later, and the method is simple and convenient. Compared with the traditional spectrum recovery method, the interferometer spectrometer spectrum recovery method improves authenticity and accuracy of the recovery result, reduces processing links, and improves the authenticity of the result.
Description
Technical field [0001] The invention relates to the technical field of spectrum analysis, in particular to a method for restoring the spectrum of an interference spectrometer based on an instrument characteristic matrix. Background technique [0002] The traditional spectral restoration method uses the inverse Fourier transform method, which usually requires the processes of interference data preprocessing, apodization, phase correction and inverse Fourier transform. Among them, the interference data preprocessing mainly corrects the errors in the data, such as the detector system error, the optical system error, etc.; the apodization is mainly used to eliminate the side lobe influence of the instrument linear function; the phase correction mainly eliminates the data sampling position offset The phase error caused by the inverse Fourier transform is to realize the conversion of interference data to spectral data to obtain the inverted spectrum. [0003] For the traditional Fourier...
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IPC IPC(8): G01J3/45
CPCG01J3/45
Inventor 李立阳张桂峰明星吕群波周锦松黄旻赵宝玮
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI