转发式联合增强北斗完好性监测技术研究

Research on Forwarding-Based Joint Enhancement Technology for BDS Integrity Monitoring

摘要: 为解决单独转发式系统定位精度较低和定位可靠性难以得到有效满足的问题，采用转发式系统联合北斗卫星导航系统实现区域性的定位增强。由于多径误差和电离层延迟误差将成为影响差分定位性能两种主要误差源，将通过完好性监测技术实现对两种误差的监测，在上述研究基础之上，分析各种可影响差分性能的风险源的作用特性，由此实现差分定位的完好性监测。

Abstract: In order to resolve the problems of relatively low positioning accuracy and the inability to effectively meet the positioning reliability requirements in a stand-alone transponding system, a transponding system is combined with the Beidou Satellite Navigation System to achieve regional positioning enhancement. Since multipath error and ionospheric delay error are the two major error sources that affect the performance of differential positioning, an integrity monitoring technique is utilized to monitor these two types of errors. On the basis of the above research, the action characteristics of various risk sources that can influence the differential positioning performance are analyzed, so as to realize the integrity monitoring of differential positioning.