Research on Signal Analysis and Processing of FOG

The properties of the fiber optic gyro(FOG)random drift are detected with the Allan variance method.The sources of some kinds of noise and its properties are analyzed and calculated.According to the characteristics of the gyro stabilization platform system,the moving filter and the threshold-value filter based on wavelet transform are used to de-noise the signal.The result of testing and statistic analyzing for FOG signal indicates that the Allan variance means is successful in separating the main random error source of signal noise and the advantages of the wavelet threshold-value filter is verified.