Application of wavelet filter in single-axis mechanically dithered RLG
Lijuan Zhan · Journal of Chinese Inertial Technology · 2006
Single-axis Mechanically Dithered RLGs adopt dither bias to eliminate the lock-in error, so the dither signal and other high frequency noise is mixed into the RLG output signals, which should be removed efficiently. In this paper, the wavelet threshold filtering was applied to a certain type of RLG for signal processing. The Daubechies wavelet function was chosen as the mother wavelet, the wavelets with different orders(such as db8, db6 and db4) and different decomposed layers were tried in signals de-noising. The result proves that the db4 wavelet works most efficiently for the RLGs.