Research on Filtering Algorithm for Hemispherical Resonator Gyro
Pla Units · 2013
Aiming at the noise of HRG signal,a cascaded filter method that combines the forward linear prediction(FLP) filter and wavelet transform was proposed,and the results of cascaded filter were analyzed by Allan variance.The method uses the FLP filter as a preceding filter and uses the DB4 wavelet function mandatory threshold wavelet transform as second filter.In order to improve the cascaded filter algorithm,a fusion algorithm based on neural network was proposed.Simulation results showed that the filter fusion algorithm retains the advantages of cascaded filtering algorithm,while the maximum reservation information of integrity,filtering accuracy is greatly enhanced.