IPhone users are four times as likely to recall LBS (location-based service) ads as non-iPhone users.
相比起非iphone用户来说，iPhone用户中能回忆起手机定位服务广告的人数四倍于他们。
In the field of mobile communication, demand for location-based service (LBS) is growing, WLAN-based indoor location system that precisely meets the needs is becoming a research focus.
在移动通信领域，人们对基于位置服务(LBS)的需求正在不断增长，基于WLAN的室内定位系统正是迎合了这种需求的一个新兴的研究热点。
This paper analyzes the principle, characteristics and key technologies of DM-GIS, which is used in location based service (LBS), presents the efficient technological scheme for application.
笔者分析了应用于空间定位服务（LBS）的分布式移动地理信息系统（DM-GIS）的原理、特点和有关关键技术，提出了应用DM-GIS技术的解决方案。
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