电子地图间的实时坐标转换系统

摘要

针对我国电子地图因坐标系不统一而导致的各个电子地图数据源中的坐标不能共用的问题,设计了面向移动端的实时坐标转换系统,利用Open Layers库将多种电子地图可视化显示在浏览器端对坐标转换结果进行了测试,解决了WGS-84、GCJ-02和BD-09坐标之间的相互转换问题,较好地实现了各种电子地图之间的坐标转换和坐标的正确显示.基于浏览器端的坐标转换测试结果表明,该坐标转换系统能够快速、准确地完成坐标转换,实现多种电子地图的显示、定位和地图的实时切换,可应用于WGS-84、GCJ-02和BD-09坐标之间的批量转换、多数据源的电子地图软件的开发等方面,具有一定的实用价值.%In consideration of the problem that coordinates from different electronic map sources cannot be shared with each other due to their coordinate systems,a mobile-oriented real time coordinate conversion system was designed and the conversion results was confirmed by visualizing various maps that were based on different coordinate systems by Open Layers.The conversion among WGS-84,GCJ-02 and BD-09 coordinate system was solved,and conversion results can be loaded correctly in different map sources.The results showed that coordinate conversion can be achieved efficiently,various maps were visualized in browser side and the map sources can be switched precisely without deviation.The research results has practical value to a certain degree,and it can be applied to the batch conversion between WGS-84,GCJ 02 and BD-09 coordinates,as well as the development of electronic map software with multiple data sources.