位置域的RAIM分析

Xinyuan Zhang, Zhigang Huang, Rui Li
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引用次数: 8

摘要

接收机自主完整性监测(RAIM)是一种应用于GNSS领域的技术。它可以在定位结果严重偏离实际位置时向用户发出警告。因此,在定量分析RAIM性能时,有必要对位置域中的误差进行划分,并确定伪距误差与位置误差之间的关系。分析了伪域恒定误差和随机误差对定位失效的影响,给出了伪域到位置域的误差转换方法,并提出了临界偏置的概念。给出了单独GPS与多星座配置的误差灵敏度差异。仿真结果表明,这两种配置在性能上存在一定的差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
RAIM analysis in the position domain
Receiver Autonomous Integrity Monitoring (RAIM) is a kind of technical used in domain of GNSS. It can provide warning to user when positioning result deviates from the real position critically. It is, therefore, necessary to demarcate the errors in the position domain on analyzing RAIM performance quantitatively as well as to confirm the relationship from the pseudorange error to the position error. This paper analyzes the impact of constant and random errors in domain of pseudorange on positioning failure, gives the error conversion method from pseudorange domain to position domain, and generates the critical bias concept. This paper also gives the difference of error sensitivity between the GPS alone and the multi constellate configuration. Simulation result showed some performance differences between these two configurations.
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