一种适用于交点坐标缺失的铁路线位快速恢复方法研究OA

The digital archives of railway line position are important basic data for constructing an information-based and digitized railway system.However,due to the incompleteness of the existing digital archives,especially the absence of key intersection coordinates,it is impossible to directly obtain the plane coordinates and mileage information of the railway line position from the existing archives.To address the problem that missing intersection coordinates make it difficult to recover line position information,a rapid recovery method for railway line positions suitable for cases with missing intersection coordinates was proposed.Firstly,the basic data of railway line positions,such as railway line position curve parameters,broken chain information,and reference mileage points,were organized.Secondly,a line plane coordinate calculation framework based on multi-coordinate system integration was adopted to achieve the accurate recovery of the railway line position under the condition of missing curve intersection coordinates parameters.The framework integrated the global custom coordinate system construction strategy,the continuous forward calculation method based on curve parameter analysis,and the coordinate conversion method for adaptive segmented mileage matching.Finally,by combining the ledger data,high-definition remote sensing images,and the initial line position calculation results,more reference mileage points were obtained,further improving the accuracy of line position recovery.The experimental results showed that the proposed method could effectively recover the plane coordinates and mileage data of the railway line position,with the plane error compared with the actual coordinates controlled within 0.1 meters.This proves the efficiency and accuracy of the proposed method,providing strong technical support for the digital construction,operation,and maintenance of existing railways.