多星座组合导航系统的RAIM算法研究

摘要

随着不同卫星导航系统间联合导航定位的全面展开,基于多星座组合导航的接收机自主完好性检测(RAIM)算法的研究显得十分重要.文中根据多星座组合导航系统的定位模型,对多星座组合导航系统的RAIM算法做了研究,详细分析了利用奇偶矢量进行故障检测和故障识别.同时对单GPS星座和GPS、Galileo和北斗三种星座组合导航的 RAIM 算法进行了仿真分析,结果表明多星座组合导航的 RAIM 算法的故障检测和故障识别性能更好,能提供更好的完好性保障.%As the combined navigation for different satellite navigation systems becomes in full swing, the study of Receiver Autonomous Integrity Monitoring (RAIM) algorithm of multi-constellation navigation system turns to be very important. The RAIM algorithm of multi-constellation navigation system is studied according to the positioning model of the multi-mode navigation system. The parity vector for fault detection and fault identification is analyzed in detail. The RAIM algorithm of single GPS constellation and multi-constellation which includes GPS, Galileo and Compass is analyzed by simulation. The results show that the RAIM algorithm of multi-mode navigation system has better performance in fault detection and fault identification and that it can provide better integrity guarantee.