Train wagon positioning method and system for railway port station

The invention relates to a railway wagon positioning method and system for a railway port station, and the method comprises the following steps: sequentially recognizing electronic tags on wagons entering a station track, obtaining recognition information stored in the electronic tags, and generating wagon arrangement information based on the types, types and numbers of the wagons in the recognition information; determining the actual position information of any section of wagon based on the driving position of the rail-mounted gantry crane; and establishing a mathematical model of train wagon position information based on the wagon arrangement information, the preset actual length information of the wagon of each type and the actual position information of any section of wagon, and generating predicted position information of each section of wagon except the wagon with the known actual position information. Based on the predicted position information of the target wagon, the accurate positioning deviation of