Research on signal processing problems based on particle filter for medium-speed maglev train location and speed detection system

Medium-speed maglev train location and speed detection system based on induction loop-cable works in the complex magnetic environment. It is vulnerable to the interference of suspended magnetic field, traction current and electric equipment. The variation of the excitation coil' height and the crosstalk between the signal lines will cause the distortion of the signal, which will affect the positioning precision of the system. The particle filter has the ability to filter non Gauss noise, which is suitable for this system. The results of simulation and experiment show that the particle filter has a good effect in the induction loop system, and can effectively filter out the strong magnetic interference component in the signal.