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Bounding Integrity Risk for ARAIM Solution Separation method

机译：令人武器解决方案分离方法的界限完整性风险

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摘要

Advanced Receiver Autonomous Integrity Monitoring (ARAIM) is designed to ensure the integrity risk within the predefined level. To decide whether ARAIM can achieve the requirement of integrity for safety applications, an online evaluation of integrity risk is necessary. Furthermore, the performance of ARAIM can be improved by online optimizing the allocation of integrity risk and the continuity risk among the fault hypotheses. To meet the real-time requirement, the bounding method is necessary for online evaluation of integrity risk. In this paper, the bounding model of integrity risk for ARAIM Solution Separation (SS) method is described. The model of the upper-bound in parity space is derived. On this basis, the selection of model parameters is discussed and the impact of the satellite geometry and detection threshold on the bounding performance is analyzed. The theoretical analysis and simulations demonstrate that the bounding method proposed in this paper can obtain tight bounding performance. Affected by the satellite geometry, the bounding tightness for the satellite with higher weight in positioning is less tight than that with lower weight using baseline SS method. The bounding performance for the satellite with higher weight can be improved using optimized SS method when compared with baseline SS method.
机译：高级接收方自主完整性监控（ARAIM）旨在确保预定义级别内的完整性风险。为决定araim是否可以实现安全申请的完整性要求，需要在线评估完整性风险。此外，通过在线优化完整性风险分配和故障假设之间的连续性风险，可以改善araim的表现。为了满足实时要求，有必要的方法是在线评估完整性风险所必需的。在本文中，描述了ARAIM解决方案分离（SS）方法的完整性风险的边界模型。导出奇偶校验空间中限的模型。在此基础上，讨论了模型参数的选择，并分析了卫星几何形状和检测阈值对界定性能的影响。理论分析和仿真表明，本文提出的边界方法可以获得紧密的边界性能。受卫星几何形状的影响，定位重量较高的卫星的界定紧密性比使用基线SS方法具有较低重量的卫星的密封性较小。与基线SS方法相比，使用优化的SS方法可以改善具有更高权重的卫星的界限性能。

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