Web地图服务集成关键问题的探究

Key Issues of Web Map Services Integration

针对Web地图服务集成过程中所涉及到的坐标参考系不一致、保持图层相对地理位置不变、避免图层变形和返回图层的透明性等关键技术问题分析讨论,从而提出在服务器端对Web地图服务的GetMap参数信息表示的不同地图服务进行预处理,使之基本达到Web地图服务的有效集成.其间通过一个Web地图服务集成的实例验证了这些解决方案的可行性.

The paper analyzes key issues of Web Map Services integration, which includes the inconsistency of spatial reference system, keeping locations steady among layers, avoiding tensile and deformation of layers, layers transparency, and coordinated transformation between screen and geographic coordinate. The corresponding solutions in the server are given by the different parameter information of WMS GetMap and the effective integration of WMS is achieved. Finally, the feasibility of the solution is verified by a instance of Web Map Service integration.