NIORAIM algorithm applied to a multiconstellation GNSS: Analysis of integrity monitoring performances in various phases of flight

P. Madonna, S. Viola, Luca Sfarzo
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引用次数: 6

Abstract

Many studies have been conducted on RAIM to use GNSS navigation systems in those fields where very strict performances are required. In safety-of-life applications, such as aviation, in critical phases of flight such as approach and landing, integrity plays an extremely important role and integrity monitoring functions become necessary. To perform such task many algorithms have been proposed: NIORAIM is one of the most promising. NIORAIM uses non-uniform weights applied to the pseudo-range measurements of satellites involved in the position solution lowering the integrity levels, thus improving integrity availability at the cost of a very slight degradation of accuracy of the position solution.
NIORAIM算法在多星座GNSS中的应用:飞行各阶段完整性监测性能分析
为了在对性能要求非常严格的领域使用GNSS导航系统,已经对RAIM进行了许多研究。在生命安全应用中,如航空,在飞行的关键阶段,如进近和着陆,完整性起着极其重要的作用,完整性监测功能是必要的。为了完成这样的任务,已经提出了许多算法,NIORAIM是最有前途的算法之一。NIORAIM使用非均匀权值对位置解中涉及的卫星的伪距离测量值进行加权,降低了完整性水平,从而提高了完整性可用性,但代价是位置解的精度会有非常轻微的下降。
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