文章基本信息

标题：Quantifying the performance of navigation systems and standards for assisted-GNSS
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作者：Mark Petovello ; Sam Pullen ; Jari Syrjärinne 等
期刊名称：Inside GNSS
印刷版ISSN：1559-503X
出版年度：2008
卷号：3
期号：6
出版社：Gibbons Media & Research
摘要：What are the differences between accuracy, integrity, continuity, and availability, and how are they computed? A: These four words describe parameters that quantify the performance of navigation systems. The terms are not unique to satellite navigation, as they have been used for many years with respect to other navigation systems and, with broader definitions, throughout the practice of engineering. This column will describe the use of these terms for navigation and focus on their applicability to GNSS. Accuracy is the navigation performance parameter that is most commonly used and is the easiest to understand. It is a measure of the error, or the deviation of the estimated position from the unknown true position, of a given navigation tool or system. More precisely, accuracy is a statistical quantity associated with the probabilistic distribution of navigation error.