Application of the Wavelet Packet Analysis in the RLG Strapdown INS

Wavelet packet analysis is adopted to filter the output signal of ring laser gyroscope (RLG) in order to reduce the influence to the alignment and navigation precision of the RLG strapdown inertial navigation system (INS), and the filtering effect in the practical system has been contrastively investigated with the exploited evaluating software. The result shows that the filtering method of wavelet packet analysis is simple and practical, and it is especially fit for processing the signals of RLG strapdown INS, and it can enhance alignment and navigation precision greatly.