Raman spectrum preprocessing method and system

Abstract

The invention discloses a Raman spectrum preprocessing method. The method comprises a wavelet denoising stage, an asymmetrical least square method denoising stage, a standard normalization processing stage and a cubic smoothing spline fitting processing stage, wherein in the asymmetrical least square method denoising stage, by designing a special gate circuit to replace a software processing method of an asymmetrical least square method baseline correction algorithm in a preprocessing system, the processing capacity and the preprocessing effect of a Raman spectrum signal preprocessing system are improved, and in the same processing time condition, the effect of a Raman spectrum preprocessing algorithm can tend to be restrained to better effect through multiple iterative processing. The idea can be widely applied to other spectrum signal preprocessing systems.

Description

technical field [0001] The invention relates to a signal processing method, in particular to a Raman spectrum signal preprocessing method, and also to a Raman spectrum preprocessing system. Background technique [0002] In the existing design of Raman spectrometers, in order to eliminate various spectral signal noises and improve the signal-to-noise ratio of spectral signals, Raman spectrometers generally include spectral signal preprocessing systems, but no detailed reports and descriptions have been made on their working methods . Moreover, since these research results are all realized by software, although they can meet the requirements of Raman spectral signal preprocessing and denoising, and improve the signal-to-noise ratio, they can serve as a reference for the design of general Raman spectral systems. There are still some deficiencies in the real-time processing performance and better denoising effect of the product. With the widespread use of Raman spectrometer an...

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Problems solved by technology

[0002] In the existing design of Raman spectrometers, in order to eliminate various spectral signal noises and improve the signal-to-noise ratio of spectral signals, Raman spectrometers generally include spectral signal preprocessing systems, but no detailed reports and descriptions have been made on their working methods

Moreover, since these research results are realized by software, although they can meet the requirements of Raman spectral signal preprocessing and denoising, and improve the signal-to-noise ratio, they can serve as a reference for the design of general Raman spectral systems. There are still some deficiencies in the real-time processing performance and better denoising effect of the product

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