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

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ARAIM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。

In order to extend GNSS applications demanding high integrity and safety, this paper focuses 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 availability based on the GNSS measured data. Results show that the VPL, Accuracy, EMT, Continuity Risk and availability in the GPS/GLONASS mode can meet the LPV-200 performance requirements, verifying the ARAIM algorithm for VPL, Accuracy, EMT, Continuity Risk, and availability prediction.