Abstract

In the online detection of water quality based on UV-Vis spectroscopy, there are different levels of interference in the original spectral signal. In order to improve the signal-to-noise ratio of the signal and the accuracy of the system parameter calculation, the original spectral signal acquired needs to be denoised. In this paper, the different water sample data obtained are processed by wavelet and wavelet packet transform, and the differences between the two methods are analyzed to determine the optimal denoising method for water quality spectral signals.

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