摘要
受多路径误差影响,GPS处于高反射环境下可导致接收机相位失锁,对点位坐标影响高达15cm;室内环境卫星无法锁定,GPS更是不能正常工作。本文引入了Skyhook XPS一体化混合定位系统,综合全球定位系统(GPS)、基站三角塔(Cell Tower Triangulation)和无线宽带(Wi-Fi)三种技术之优势,迅速准确定位。详细介绍了Skyhook XPS的系统架构、部署模式与主要接口函数,并基于SDK开发程序实现定位服务。实验结果表明其首次定位时间快、准确率高、可用性强。在高反射地形地物环境下为GPS采集仪提供有效补充定位服务,为无线终端设备、LBS等提供有效定位信息。
Affected by muhipath effects, in a high reflective environment the GPS receiver＇s phase change can not be measured out, point coordinate could deviate up to 15cm; satellites can not be locked indoors, GPS is not working properly. The article intro- duced Skyhook XPS-hybrid integrative positioning system, integrated advantages of Global Positioning System （GPS）, Cell Tower Tri- angulation and Wi-Fi three kinds of technology, to locate quickly and accurately. Skyhook XPS＇ S system architecture, deployment model and the main interface functions were described in detail and a location-based service was achieved based on SDK. Experimental results showed that it＇ s fast Time-To-First-Fix, with high accuracy, and strong availability. In high-reflective terrain environment, the hybrid integrative positioning system would be an effective instrument for GPS and provide effective positioning information and locationbased services for wireless terminals, LBS, etc.
出处
《测绘科学》
CSCD
北大核心
2011年第5期5-7,共3页
Science of Surveying and Mapping
基金
国家科技支撑计划资助项目(2008BAK50B01)
