In order to solve the problem of inaccurate speed and distance measurement under the condition of idling and roller skidding of speed measuring wheels by using speed sensor, the speed and distance measurement information fusion of radar, GPS/BDS, ground transponder information, track signal and CIR was used in LKJ-15 train operation monitoring system to realize the speed and location function of train. The practical application showed that the scheme improved the accuracy and automation of speed measurement and positioning of train control vehicle system, and reduced the manual intervention to equipment and the risk caused by it.