基于故障树分析GNSS接收机伪距分层方法研究

随着全球卫星导航系统的快速发展，导航定位服务技术越来越成为人们智能生活中不可或缺的部分，特别是高精度的定位技术更是如此。本文从北斗广域分米级系统出发，针对 GNSS 接收机对不同卫星伪距间存在伪距分层现象，采用故障树分析方法，通过问题排查，提出了一种伪距偏差修正值的方法，结果显示该方法对伪距分层具有较明显弱化效果。

Research on GNSS Receiver Pseudo-Range Layering Based on Fault Tree

The technology of navigation positional service is more and more becoming an integral part of intelligent living fallowing with of the Global Navigational Satellite of System(GNSS), which is achieved rapid development. Especially the high accuracy positioning technology is so that. The text proceeds from BeiDou Wide Area Decimeters System and adopts the method of fault tree analysis according to the phenomenon of pseudo-range layering between deferent satellites by a GNSS receiver. A method of pseudo-range deviational correction is improved after the fault tree. The results show that the method has an obvious weakening effect to the pseudo-range layering.