Four key technologies including wireless location, map buffer, multi-scale representation of spatial data and spatial data model of mobile terminal oriented are discussed. 分析了适于移动地理信息服务的无线定位、服务端地图缓冲、空间数据的多尺度表达以及面向移动终端的空间数据模型四种关键技术,并提出了具体解决方案。
A sliding stop buffer is normally installed at the terminal end of a rapid urban rail transit line. This type of stop buffer is simple in structure; 在城市快速轨道交通线路的终端,一般均设置了滑动式缓冲挡车器,这种挡车器虽然结构简单,但明显的不足之处是要有一定的摩阻滑动距离,因此设备占用线路的长度相应较长。
For the strategy selection, take the latest terminal buffer technology combined with the router pattern, largely alleviated the terminal pressure and the possibility of the congestion. 对存储策略的选择采取了目前最新的终端缓存结合路由器模式进行管理,很大程度上缓解了终端的压力和出现拥塞的可能。