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首页> 外文会议>International technical meeting of the Satellite Division of the Institute of Navigation >Advanced RAIM Architecture Design and User Algorithm Performance in a real GPS, GLONASS and Galileo scenario
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Advanced RAIM Architecture Design and User Algorithm Performance in a real GPS, GLONASS and Galileo scenario

机译：在真实GPS，GLONASS和Galileo场景中的高级RAIM架构设计和用户算法性能

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In the past years the scientific community is investigatingwith increasing interest innovative techniques to providevertical guidance to aviation users up to precision approachand even autonomous guidance on ground. Next to SBASand GBAS systems other novel architectures have been underinvestigated. In particular the ARAIM concept is based on thefact that the future of multiconstellation and multifrequencysignals will offer the possibility to reduce the dependency fromthe ground infrastructure and consequently reduce further thedeployment and operation costs. The user will be providedwith an augmentation signal (Integrity Support Message) updatedand transmitted with a long latency. This is the idea ofthe Advanced Receiver Autonomous Monitoring.This paper proposes an architecture which aims on onehand to maximize the reuse of existing infrastructure and onthe other to provide the user with the necessary robustnessrequired mostly in the early next years by new constellations.The differentiating factor among the different alternatives isthe so called Time to ISM Alarm, the update frequencyand dissemination of the ISM information. The proposedarchitecture foresees the provision of two different type ofmessages: a long term one addressing nominal conditions anda short term one to detect anomaly conditions.The paper presents also the user algorithms suitable for thisarchitecture which optimizes the user availability by reducingthe protection level with respect to existing solutions. Theperformance of the user algorithm has been analysed in a realscenario: a receiver in front of an airport hangar disturbed bya GNSS repeater. The paper shows how the user algorithmcan detect the disturbance and reject it. Furthermore theprotection level performances is also shown, and in particularits improvement with respect to existing ARAIM algorithm[1].
机译：在过去的几年中，科学界正在调查 随着兴趣的增长，创新技术将为 对航空用户的垂直指导，直至精确的方法 甚至是地面上的自主指导。 SBAS旁边 和GBAS系统其他新颖的架构已经在开发中 调查。特别是ARAIM概念是基于 事实，即多星座和多频率的未来 信号将提供减少依赖的可能性 地面基础设施，因此进一步减少了 部署和运营成本。将向用户提供 带有增强信号（完整性支持消息）已更新 并且传输时延很长。这是 高级接收器自主监视。 本文提出了一种针对以下方面的架构： 最大限度地利用现有基础架构 另一个为用户提供必要的鲁棒性 新星座将主要在明年年初所需。 不同选择之间的差异因素是 所谓的ISM警报时间，更新频率 并传播ISM信息。建议 架构预见将提供两种不同类型的 信息：长期解决标称条件和 短期检测异常情况。 本文还介绍了适用于此的用户算法 通过减少用户使用率来优化用户可用性的体系结构 现有解决方案的保护级别。这 用户算法的性能已经在实际中进行了分析 场景：机场机库前的接收器受到干扰 GNSS中继器。本文展示了用户算法 可以检测到干扰并予以拒绝。此外 还显示了防护级别的性能，尤其是 相对于现有ARAIM算法的改进 [1]。

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