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A Position Domain Relative RAIM Method

机译:位置域相对RAIM方法

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摘要

The GNSS Evolutionary Architecture Study (GEAS) Panel has been evaluating future GNSS-based architectures to provide worldwide instrument approach guidance known as LPV-200 in the 2025 to 2030 time frame. One of the architectures being considered by GEAS is based on a new concept called relative receiver autonomous integrity monitoring (RRAIM). In this architecture RRAIM is implemented in aircraft and is used in conjunction with a system like the satellite-based augmentation system (SBAS), possibly with a reduced number of ground reference stations or an integrity-assured GPS III system that meets all LPV-200 requirements except for the integrity time-to-alert (TTA) requirement. RRAIM fills the time gap between the required TTA and the TTA assured by GPS III (or SBAS augmentation) by propagating the most recent integrity-assured position solution to the current time using accumulated carrier phase single differences of range measurements. RRAIM gives significantly higher service availability than can be obtained with stand-alone absolute RAIM (ARAIM). This paper develops a position domain RRAIM method with an optimization scheme that further improves LPV-200 service availability.
机译:GNSS进化架构研究(GEAS)小组一直在评估未来基于GNSS的架构,以在2025年至2030年的时间范围内提供称为LPV-200的全球仪器方法指南。 GEAS正在考虑的一种架构基于称为相对接收机自主完整性监控(RRAIM)的新概念。在这种体系结构中,RRAIM在飞机上实现,并与基于卫星的增强系统(SBAS)之类的系统结合使用,可能会减少地面参考站的数量,或者满足所有LPV-200要求的具有完整性保证的GPS III系统除完整性警报时间(TTA)要求外,其他要求。 RRAIM通过使用距离测量的累积载波相位单差,将最新的完整性保证的位置解传播到当前时间,从而填补了所需的TTA与GPS III(或SBAS增强)所保证的TTA之间的时间间隔。与独立的绝对RAIM(ARAIM)相比,RRAIM可以提供更高的服务可用性。本文开发了一种具有优化方案的位置域RRAIM方法,可以进一步提高LPV-200服务的可用性。

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