辅助型北斗定位技术及其应用

Assisted Beidou positioning technology and its application

随着在微弱卫星信号环境下应用需求的增长以及对首次定位时间和定位精度的要求,一种高性能的卫星定位技术——辅助型全球卫星导航系统(A-GNSS)定位技术成为导航领域的研究热点。文中针对中国自主开发的北斗导航系统,探讨了辅助型北斗定位(A-Beidou)的技术原理、操作方法和需要攻克的难题;以手持终端设备为例说明A-Beidou技术的具体应用及发展前景。

With the increasing application demand in weak satellite signal environment and requirement for the initial positioning of time and accuracy, a high performance satellite positioning technology - A- GNSS,has become a research hotspot in the navigation field. According to the Beidou navigation system, this paper dieusses the principles,operation methods and the need to tackle issues of the A-Beidou. In the handheld terminal equipment as an example, it presents the practical application and the development prospects.