数字轨道地图线路分段表示方法研究

将GNSS与数字轨道地图相结合应用于列控系统,可降低建设和运营成本,实现智能化列车控制.但大量线路曲线在数字轨道地图中的表示是一个难点.本文提出一种线路分段表示方法,先根据角度差将线路划分为直线、圆曲线,缓和曲线,再用最小二乘原理对3种线元分别进行拟合.根据算法编制计算程序,计算实例证明了算法的有效性,数据的精度和存储效率能满足应用需求.

Research on segmenting representation method of railway line for digital track map

Applying GNSS and digital track map to Train Control System could reduce the costs of construction and operating, implement intelligent train control. Since curves representations in the digital track map were difficult, a method of segmenting representation was proposed in this paper. First, the line was divided into straight lines, circular curves, transition curves according to the angle difference, and then three kinds of line elements were fitted separately by the least square principle. The algorithm was programmed and the calculation example proved the effectiveness of the algorithm, and the precision and storage efficiency could fill the reouirements of application.