Introducing the FDI quintuplets (fault detection and isolation)

J. Farrell
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Abstract

A method for extending RAIM (receiver autonomous integrity monitoring) has been devised. According to this approach, if one wants to determine whether some SV has a bias and, if so, how much, it should be included as a state to be estimated; under reasonably general conditions, a single SV bias is observable. In a 5-SV snapshot example, both conventional and extended RAIM form five different solutions, with each SV taking its turn in succession as the suspected bias source. Whereas conventional RAIM excludes the suspect SV from the solution, extended RAIM retains it while including the bias as a fifth unknown to be determined.<>
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引入FDI五元组(故障检测和隔离)
设计了一种扩展接收机自主完整性监测(RAIM)的方法。根据这种方法,如果想确定某个SV是否有偏差,如果有,偏差有多大,就应该将其作为待估计的状态;在合理的一般条件下,单个SV偏置是可观察到的。在5-SV快照示例中,传统和扩展的RAIM形成了五种不同的解决方案,每个SV依次作为可疑的偏置源。传统的RAIM将可疑的SV从解决方案中排除,而扩展的RAIM保留了它,同时将偏差作为第五个有待确定的未知数。
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