Applications of Multi- wavelet Noise Reduction Algorithm in the Inertial Navigation Signal Processing

摘要

Due to the limitations of the traditional wavelet noise reduction effects, the principle of multi-wavelet method has been analyzed with the aim to apply it to the signal processing of optical angular velocity sensor so as to suppress the noise disturbance of the optical angular velocity sensor output signal. And at the same time, a comparative study has been made between wavelet and multi-wavelet in their noise reduction performances. The research result shows that multi-wavelet can retain more complete signals while suppressing the noise disturbance, although its requirements for the prior knowledge of senor signal are low.