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Receiver autonomous integrity monitoring (RAIM) is a technology developed to assess the integrity of global positioning system (GPS) signals in a GPS receiver system. It is of special importance in safety-critical GPS applications, such as in aviation or marine navigation. Several GPS-related systems also provide integrity signals separate from GPS. Among these is the WAAS system, which uses separate signals broadcast from different satellites to indicate these problems directly.

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  • Receiver Autonomous Integrity Monitoring (de)
  • RAIM (es)
  • Receiver autonomous integrity monitoring (en)
  • 接收机自主完整性监测 (zh)
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  • Receiver Autonomous Integrity Monitoring (RAIM) ist ein Verfahren zur Überprüfung der Signalintegrität globaler Navigationssatellitensysteme (GNSS). Es spielt vor allem bei sicherheitskritischen Anwendungen, zum Beispiel in der Luft- und Seefahrt, eine wichtige Rolle. (de)
  • 接收机自主完整性监测(英語:Receiver autonomous integrity monitoring,缩写RAIM)是一项评估GPS接收机系统中全球定位系统(GPS)信号完整性的技术。该技术对于生命攸關系統的GPS应用(如航空或航海導航)尤为重要。 GPS本身不包含任何有关其信号完整性的内部信息。如果GPS卫星广播稍微不正确的信息,导致导航信息不正确,接收机无法使用标准技术辨识该情况。RAIM采用冗余信号产生多个GPS并对其进行比较,根据统计方法确定故障是否与某个信号有关。如果有24个或以上的GPS信号可操作,则RAIM被认为可用。如果信号数量低于该数字,则必须使用经批准的地面预测软件检查RAIM可用性。 数个与GPS相关的系统也提供了独立于GPS的完整性信号。例如广域增强系统(WAAS)使用不同卫星广播的单独信号直接指出这些问题。 (zh)
  • RAIM (Receiver Autonomous Integrity Monitoring) es una tecnología para determinar la integridad de la señal de los Sistemas Globales de Navegación por Satélite (GNSS). Juega un papel importante en los usos sensibles de estas señales tales como la navegación marítima o aérea. * Datos: Q2135146 (es)
  • Receiver autonomous integrity monitoring (RAIM) is a technology developed to assess the integrity of global positioning system (GPS) signals in a GPS receiver system. It is of special importance in safety-critical GPS applications, such as in aviation or marine navigation. Several GPS-related systems also provide integrity signals separate from GPS. Among these is the WAAS system, which uses separate signals broadcast from different satellites to indicate these problems directly. (en)
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  • Receiver Autonomous Integrity Monitoring (RAIM) ist ein Verfahren zur Überprüfung der Signalintegrität globaler Navigationssatellitensysteme (GNSS). Es spielt vor allem bei sicherheitskritischen Anwendungen, zum Beispiel in der Luft- und Seefahrt, eine wichtige Rolle. (de)
  • RAIM (Receiver Autonomous Integrity Monitoring) es una tecnología para determinar la integridad de la señal de los Sistemas Globales de Navegación por Satélite (GNSS). Juega un papel importante en los usos sensibles de estas señales tales como la navegación marítima o aérea. El sistema RAIM detecta el fallo de la señal de un satélite de una constelación GNSS comparando la información sobre la posición y tiempo obtenida de diversas combinaciones de cuatro satélites en un conjunto de por lo menos cinco satélites visibles. De esta manera, puede detectarse un satélite defectuoso y dar una advertencia al piloto. Puesto que el sistema RAIM no incorpora la capacidad de cancelar la señal de un satélite dañado, no debe seguir usándose la navegación GPS cuando el RAIM detecta un satélite con problemas. El sistema FDE es el que efectúa la cancelación de un satélite defectuoso. Puede prestarse asistencia al sistema RAIM mediante un proceso conocido como ayuda barométrica. La información sobre la altitud barométrica de las aeronaves se proporciona al equipo de GPS, el cual puede entonces simular a un satélite ubicado directamente en la perpendicular del usuario. Con la ayuda barométrica, el requisito del RAIM (con respecto a los cinco o seis satélites) se reduce a cuatro o cinco, respectivamente. * Datos: Q2135146 (es)
  • Receiver autonomous integrity monitoring (RAIM) is a technology developed to assess the integrity of global positioning system (GPS) signals in a GPS receiver system. It is of special importance in safety-critical GPS applications, such as in aviation or marine navigation. GPS does not include any internal information about the integrity of its signals. It is possible for a GPS satellite to broadcast slightly incorrect information that will cause navigation information to be incorrect, but there is no way for the receiver to determine this using the standard techniques. RAIM uses redundant signals to produce several GPS position fixes and compare them, and a statistical function determines whether or not a fault can be associated with any of the signals. RAIM is considered available if 24 GPS satellites or more are operative. If the number of GPS satellites is 23 or fewer, RAIM availability must be checked using approved ground-based prediction software. Several GPS-related systems also provide integrity signals separate from GPS. Among these is the WAAS system, which uses separate signals broadcast from different satellites to indicate these problems directly. (en)
  • 接收机自主完整性监测(英語:Receiver autonomous integrity monitoring,缩写RAIM)是一项评估GPS接收机系统中全球定位系统(GPS)信号完整性的技术。该技术对于生命攸關系統的GPS应用(如航空或航海導航)尤为重要。 GPS本身不包含任何有关其信号完整性的内部信息。如果GPS卫星广播稍微不正确的信息,导致导航信息不正确,接收机无法使用标准技术辨识该情况。RAIM采用冗余信号产生多个GPS并对其进行比较,根据统计方法确定故障是否与某个信号有关。如果有24个或以上的GPS信号可操作,则RAIM被认为可用。如果信号数量低于该数字,则必须使用经批准的地面预测软件检查RAIM可用性。 数个与GPS相关的系统也提供了独立于GPS的完整性信号。例如广域增强系统(WAAS)使用不同卫星广播的单独信号直接指出这些问题。 (zh)
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