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GPS接收机自主完好性监测算法可用性分析

DOI: 10.16411/j.cnki.issn1006-7736.2015.01.016, PP. 91-95

Keywords: 全球定位系统(GPS),接收机自主完好性监测(RAIM),水平保护级,可用性分析

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Abstract:

以全球定位系统(GPS)为研究对象,研究水平定位误差保护级(HPL),阐述自主完好性监测(RAIM)算法故障监测和可用性原理.结合导航性能在航空应用中的需求,对影响RAIM可用性的因素进行数据仿真分析.结果表明,漏检率一定时,RAIM可用性随着误警率降低而降低;误警率一定时,RAIM可用性随着漏检率降低而降低.RAIM算法的可用性随着截止高度角降低和可视卫星数增加而提高.研究结果为采用RAIM算法进行故障卫星的检测和隔离提供了一定依据.

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