MEMS gyroscope signal denoising method based on self-adaptive multi-scale filter
An adaptive and filter technology, applied in the direction of instruments, measuring devices, etc., can solve difficult problems such as signal distortion, achieve the effect of making up for defects, avoiding signal distortion, and ensuring denoising effect
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[0036] The present invention will be further described below in conjunction with the accompanying drawings.
[0037] The present invention is based on the MEMS gyroscope signal denoising method of the self-adaptive multi-scale filter, and the specific implementation process is as follows:
[0038] Step 1: Collect the MEMS gyroscope signal, and calculate the sample variance of the signal at each sampling point.
[0039] First, choose W max , W min , lambda th , K as the initial input value; where, W max is the maximum value of the left window length and the right window length of the SG filter, W min is the minimum value of the left window length and right window length of the SG filter, λ th Is the sample variance threshold used to detect mutation signals. According to this value, the left and right window lengths of the SG filter can be adaptively adjusted, and K is the order of the SG filter. The selection of these values depends on experience. For the same type of g...
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