GNSS接收机自主完备性监测高级算法的有效性验证

Validation of the GNSS Advanced ARAIM Algorithm

摘要: 针对RAIM的高级算法———ARAIM,使之应用于对GNSS完备性和生命安全要求更高的领域,基于GNSS实测数据对ARAIM算法下的垂直保护水平、精度、有效监测阈值、连续性风险进行了研究,并对ARA-IM算法下GNSS的可用性进行了评估。结果表明,相对于GPS系统而言,GPS/GLONASS系统下的垂直保护水平、精度、有效监测阈值、连续性风险及可用性完全满足LPV-200阶段的导航性能要求,验证了ARAIM算法在预测垂直保护水平、精度、有效监测阈值、连续性风险方面的有效性。

Abstract: In order to extend GNSS applications demanding high integrity and safety,this paper focu-ses on the advanced RAIM(ARAIM)algorithm by analyzing the Vertical Protection Level(VPL),Accuracy,the Effective Monitor Threshold(EMT),and Continuity Risk;then evaluating GNSS availabilitybased on the GNSS measured data.Results show that the VPL,Accuracy,EMT,Continuity Risk and avail-ability in the GPS/GLONASS mode can meet the LPV-200performance requirements,verifying theARAIM algorithm for VPL,Accuracy,EMT,Continuity Risk,and availability prediction.