Vehicle body-bogie installation relation dynamic calculation method based on post-processing

The invention provides a vehicle body-bogie installation relation dynamic calculation method based on post-processing. The method comprises the following steps: acquiring mileage output by a speedometer under a carrier coordinate system; calculating and acquiring the position increment of the odometer under the carrier coordinate system based on the mileage output by the odometer; taking a difference value between the position increment of the inertial navigation system under the carrier coordinate system and the position increment of the odometer under the carrier coordinate system as a system observed quantity, and obtaining an observation matrix according to the system observed quantity; acquiring a system state transition matrix; according to different linear conditions, on the basis of the system observation matrix and the system state transition matrix, state variables are estimated through a Kalman filtering algorithm, and the post-processing vehicle body-bogie installation relation is calculated on th