Fractal Filtering and Its Application in Railway Signal

With the development of electrify railway, its quality is degraded that the train receives railway signal.In order to demodulating the valid signal in the strong distrubed envirment, a valid filtering technology is needed.A fuzzy control filtering method based on fractal dimension idea of fractal theory is put forward.Using this method the value of fuzzy control parameters could be adjusted dynamically according to the characters of the complicated signal.Simulation shows that not only a better filtering result is obtained, but bright prospects are anticipated.