随着北京地铁线路的日益增多，站内服务设施的逐渐丰富，站内环境复杂度增加。目前乘客在站内出行遇到如下问题，需要站内导航来提高乘客出行的满意度：站内换乘复杂：地铁站越来越复杂、换乘关系复杂，带来乘客在地铁内出行障碍；特定服务设施不好找：站内服务设施多，缺乏指引标志，乘客不易寻找特定设施；车站出口多信息少：地铁站出入口多，乘客无法第一时间找到目标出站口；站外建筑及交通：交通换乘的信息较少，乘客出站后不能迅速换乘。通过站内外一体化导航支撑可解决站内换乘、服务设施寻找、出口周边信息等问题，来提高乘客体验，提高运营服务。

With the increasing number of subway lines in Beijing, the service facilities in the station are gradually enriched, and the environment complexity in the station is increasing. At present, passengers in the station travel encounter the following problems, the station navigation is needed to improve the satisfaction of passengers travel: station transfer is complex: the subway station is more and more complex, the transfer relationship is complex, which brings passengers travel obstacles in the subway; It is difficult to find specific service facilities: there are many service facilities in the station, and the lack of guidance signs makes it difficult for passengers to find specific facilities; More exits and less information: there are more exits and entrances in the subway station, so passengers cannot find the target exit in the first time; Buildings and traffic outside the station: traffic transfer information is less, passengers can not quickly transfer after leaving the station; In-station transfer, service facilities search, exit surrounding information, etc., all need the integrated navigation system for both inside and outside of subway stations support to improve passenger experience and operational services.