通过 minmax 优化增强 BeiDou/GNSS 的完整性
Jingsong Qiu1,2, Ci Chen1,3, Siyu Lei1,4
1School of Automation, Guangdong University of Technology, Guangzhou 510006, China.
PNAS nexus
|December 1, 2025
概括
本研究介绍了Optimal-ARAIM,这是一项用于 BeiDou/GNSS 导航的新完整性监控策略. 它显著降低了垂直保护水平 (VPL),提高了航行安全和可靠性.
科学领域:
- 卫星导航系统 卫星导航系统
- 导航完整性监控 导航完整性监控
- 航空航天工程 航空航天工程
背景情况:
- 诚信对于导航系统的可用性至关重要,影响运输,安全和监控.
- 现有的完整性监测策略面临的挑战是 BeiDou / 全球导航卫星系统 (GNSS) 中复杂的故障场景.
研究的目的:
- 提出和评估一个新的完整性监控策略,Optimal-ARAIM,以优化北斗/GNSS的垂直保护水平 (VPL).
- 通过改进完整性监控,提高航行操作的稳定性和可靠性.
主要方法:
- 通过调整全套解决方案并分配完整性/连续性风险,Optimal-ARAIM使用最小值估计器来最大限度地减少VPL.
- 一个最大监控顺序机制减轻了来自卫星故障的组合式爆炸,将场景制定为凸起的优化问题.
- 使用 BeiDou 观测和日历数据,以及全球 GNSS 日历数据来评估性能.
主要成果:
- 在使用观察数据的五个亚洲站中,平均VPL始终低于8米.
- 使用BeiDou年鉴数据预测的VPL分布主要在10米以下.
- 全球可用性覆盖率超过93%,符合CAT-I标准.
结论:
- 最佳-ARAIM有效地减少了BeiDou/GNSS的VPL,确保了稳健可靠的导航.
- 拟议的战略提高了运输和监视等关键应用的航行安全.
- 该方法表明全球可用性很高,符合严格的国际标准.
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