A risk analysis framework on GPS User Range Accuracy

机译：GPS用户范围精度的风险分析框架

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Accuracy is a major concern in Global Positioning System (GPS), and User Range Accuracy (URA) is a statistical indicator of the ranging accuracy for satellites. URA is obtainable from the satellite's signal in space (SIS); its computation depends heavily on the ground segment. The risk considered here is the failures from the GPS control segment that cause a satellite's URA to exceed the requirement, hence excluding the satellite from being used in the position solutions, and ultimately degrading system availability. The corresponding risk analysis is complex and a framework is presented here as one approach to looking at the problem. A hypothetical example is applied to demonstrate the framework from an RMA (reliability, maintainability, and availability) specialty engineer's point of view, where the requirements, algorithms, and failures analyses are integrated together.

机译：精度是全球定位系统（GPS）的主要关注点，用户范围精度（URA）是卫星测距精度的统计指标。 URA可从卫星空间信号（SIS）获得；它的计算在很大程度上取决于地面部分。这里考虑的风险是GPS控制部分的故障导致卫星的URA超出要求，从而排除了将卫星用于位置解决方案中，从而最终降低了系统可用性。相应的风险分析非常复杂，在此提出一种框架来解决问题。应用了一个假设示例，从RMA（可靠性，可维护性和可用性）专业工程师的角度演示了该框架，其中将需求，算法和故障分析集成在一起。

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《Reliability and Maintainability Symposium (RAMS), 2012 Proceedings - Annual》|2012年|p.1- 6|共6页
会议地点 Reno NV(US)
作者
Meng-Lai Yin;
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作者单位

Dept. of Electr. Comput. Eng., California State Polytech. Univ., Pomona, CA, USA;

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原文格式 PDF
正文语种 eng
中图分类技术管理、定额管理;
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A risk analysis framework on GPS User Range Accuracy

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