基于工程线路数据的电子地图自动生成方法研究

Research on Automatic Generation Methed of Electronic Map Based on Engineering Line Data

电子地图数据是实现卫星定位的基础,而实际卫星数据采集的工作量较大,易受到现场因素制约,且不能满足基于卫星定位的列控系统仿真测试平台对任意线路的测试环境需求。为此,提出一种基于工程线路数据的电子地图自动生成方法。先读取、校验和分析工程线路数据,生成线路拓扑关系,识别并提取电子地图要素信息;再根据设定的线路起点经纬度和各信号点方位角,计算正线、侧线各信号点的经纬度,生成满足卫星定位的电子地图;最后,对电子地图数据进行准确性检查。该方法对于任何一条工程线路均能仿真生成电子地图数据,为基于卫星定位的列控系统车载设备的研发和实验室测试提供有力的技术保障。

Electronic map data is the basis of satellite positioning. However, actual satellite data collection is a tremendous task and is prone to be restricted by field factors and cannot meet the test environment requirements of the simulation test platform for the train control system based on satellite positioning in a line. To solve this problem, an automated generation approach of electronic map based on engineering line data is proposed. Firstly, the engineering line data are read, verified and analyzed so as to generate the topological relationships of the line, and the element data of the electronic map can be identified and extracted. Then, the longitude and latitude of each signal point on the main line and sidings are calculated to obtain an electronic map according to the longitude and latitude of the starting point of the line and the azimuth of each signal point. In the end, the rationality of electronic map data is verified. For any an engineering line, this approach can simulate and generate the electronic map data of the line, which provides a strong technological guarantee for the research and lab test of the on-board equipment of the train control system based on satellite positioning.