Method for analyzing uplink signal transmission interference of vehicle-mounted transponder module

The invention discloses a method for analyzing uplink signal transmission interference of a vehicle-mounted transponder module, and relates to the technical field of analog simulation. The method comprises the following steps: analyzing an interference source generation mechanism and a complete interference transmission path of the urban rail train traction system according to a train body structure and an equipment arrangement position; combining the interference transmission path and a vehicle-mounted transponder equipment disturbance mechanism to construct an interference prediction three-dimensional entity simulation model for causing the vehicle-mounted transponder module to be disturbed by the traction converter system, and performing simulation to obtain a transmission function of disturbed voltage of the vehicle-mounted transponder module; and testing the common-mode current of the input side of the traction converter, and superposing the common-mode current and the transfer function obtained by simul