基于北斗的ARAIM算法在LPV-200 下的可用性研究

随着全球卫星导航系统的发展和完善， 用户在飞机进近着陆阶段使用 GNSS 保障安全的要求已成为可能，而应用于航路阶段的常规接收机自主完好性监测已 不能满足如此高的完好性要求，因此，导致了高级接收机自主完好性监测(ARAIM)的出 现。在北斗区域导航系统下， 针对进近阶段最重要的垂直导航和ARAIM 算法理论分 析，通过优化配置危险误导性信息概率(PHMI)，为较难检测的故障模式分配较大的值， 最小化垂直保护水平， 在保证完好性指标不变的条件下提高ARAIM 算法可用性。仿真 结果表明，在LPV-200 性能要求下，ARAIM 优化算法的可用性明显提高，所提方法是有 效的。

Study on Availability of ARAIM Under LPV-200 Using BDS

With the development and improvement of the global navigation satellite systems, it is possible for users to use GNSS to provide security service in approach phase. However, the traditional receiver autonomous integrity monitoring cannot fulfill the high integrity requirement, and then comes the advanced receiver autonomous integrity monitoring algorithm. Optimizing the allocation of the probability of hazardous misleading information can lower the vertical protection level and improve the coverage rate of ARAIM algorithm according to the vertical guidance procedure and ARAIM algorithm of the approach phase. Finally, the simulation results show that the optimized algorithm achieves higher availability rate under LPV-200 in China area.