Method for separating vibration signal blind sources under strong noise environment
A blind source separation, vibration signal technology, applied in transmission noise suppression, shaping network in transmitter/receiver, electrical components, etc., can solve problems such as algorithm failure, achieve fast convergence speed, good separation effect, separation effect stable effect
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[0042] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:
[0043] The implementation of the present invention is further described in conjunction with the accompanying drawings. figure 1 It is a flow chart of the method of the present invention, such as figure 1 As shown, the algorithm includes the following four steps.
[0044] Step 1: For a given set of noise-containing mixed signals, first perform autocorrelation processing on the mixed signals, and then remove the part of the autocorrelation-processed signal at zero delay and near the maximum delay to achieve the quadratic Noise reduction to obtain the noise-reduced mixed signal. Specifically:
[0045] The noise-containing aliasing signal is denoised by the autocorrelation noise reduction method, and the autocorrelation function of the signal x(t) is defined as:
[0046] R x ( τ ) ...
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