基于最小二乘残差的导航接收机自主完好性监测方法

Research on Receiver Autonomous Integrity Monitoring by Least Squares Residuals

随着卫星导航系统在生命安全服务领域的广泛应用,用户对卫星导航接收机导航定位结果的可用性和可靠性要求越来越高。目前,基于用户端的较为有效的方法就是利用接收机自主完好性监测来实现。本文对利用最小二乘残差法实现卫星导航接收机自主完好性监测算法进行了研究,并分析了可视卫星数对完好性监测的影响。对北斗系统实测数据的处理也得到比较满意的结果,验证了该方法的正确性和可用性,可为北斗卫星导航实际应用提供参考。

With the wide application of the satellite navigation system in the field of life safety service, users pay more attention to the reliability and availability of the navigation re- sults. Receiver autonomous integrity monitoring（RAIM） can achieve better performance in the position domain than others at present. Based on real data the proposed RAIM algorithm is tested. Experimental results demonstrate the RAIM algorithm can effectively detect and i- solate a false satellite. This can provide important reference for application of BDS.