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In order to improve the de-noising effect of wavelet threshold further, after analyzing the shortcomings of the traditional soft and hard threshold de-noising methods, this paper proposes a trade-off of soft and hard threshold method. The typical blocks signal superposed standard Gaussian white noise in the Matlab wavelet toolbox is taken as an example for simulating and testing, to verify the feasibility...
To solve the problem of roll eccentricity signal with the noise in the HAGC system, a new method based on adaptive threshold de-noising algorithm of roll eccentricity signal is proposed. The new method can self-adaptively decide the threshold of wavelet analysis and make the SNR as a function of the parameter of the filter to acquire the optimal threshold parameter by using midpoint method. This method...
The wavelet transform coefficient is processed by using grey relation analysis of the grey theory, and a new wavelet threshold method - GID (grey incidence degree) threshold method based on the wavelet analysis theory is introduced. The test shows that the signal smoothness and similarity of the two signal criteria have been greatly improved by the GID threshold method compared with existing threshold...
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