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FAULT DETECTION, CONTAINMENT, ISOLATION, AND RESPONSE ARCHITECTURE FOR A POSITION, NAVIGATION, AND TIMING (PNT) SYSTEM
FAULT DETECTION, CONTAINMENT, ISOLATION, AND RESPONSE ARCHITECTURE FOR A POSITION, NAVIGATION, AND TIMING (PNT) SYSTEM
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机译:用于位置,导航和定时(PNT)系统的故障检测,容纳,隔离和响应架构
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摘要
A PNT system for a user includes a plurality of sensors configured to collect measurements, where the sensors are grouped into a plurality of subsets of sensors. The PNT system individually compares a measured value collected by each of the plurality of sensors with a corresponding threshold value. The PNT system determines a potential fault condition for a particular sensor exists when the measured value exceeds the corresponding threshold value. In response to detecting the potential fault condition, the PNT system contains the potential fault condition by determining a replacement value. In response to determining a number of times that the potential fault condition is detected exceeds a predetermined value, the PNT system determines a confirmed fault condition with the particular sensor and re-groups the plurality of subsets of sensors. The PNT system proceeds to a second level of fault detection for determining a plurality of individual navigation solutions.
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