弹性PNT概念内涵、特征及其辨析

doi:10.13474/j.cnki.11-2246.2023.0108

摘要/Abstract

摘要： 定位、导航与授时(PNT)已成为与人们日常生活和经济社会运行最紧密、最相关的信息技术。弹性PNT描述了PNT系统抵御危害、适应风险和及时从干扰中恢复的能力。由于天基PNT系统的天然脆弱性和人为干扰的威胁显著增加,弹性PNT已成为欧美等国研究的热点。本文首先对可靠性、弹性相关概念进行辨析,分析了复杂系统的性能指标从传统可靠性到弹性发展的缘由和趋势;然后讨论了PNT系统的弹性概念,重点探讨了PNT系统的弹性特征和指标,并给出了弹性与精确性、完好性、连续性、可用性等指标的关系;最后给出了相关结论。

关键词: PNT, 弹性, 弹性PNT, 可靠性, 脆弱性

Abstract: PNT (positioning, navigation and timing) has become an information technology which is closely related to our daily life and economic and social operations. Resilient PNT describes the ability of a PNT system to resist, adapt, and recover from disturbances in a timely manner. Due to the significant increase in the inhabited vulnerability of space-based PNT systems and the threat of man-made interference, resilient PNT has become a research hot spot in Europe and the United States. Firstly, the related concepts of reliability and resilience are distinguished and analyzed, and the reasons and trends of the development of complex system performance indicators from traditional reliability to resilience are analyzed in this paper. Then, the concept of resilient PNT system is discussed, and its characteristics and indicators are mainly analyzed, and the relationship between the resilience and other indicators such as accuracy, integrity, continuity and availability is given. Finally, relevant conclusions are given.

Key words: PNT, resilience, resilient PNT, reliability, vulnerability

中图分类号:

P228

明锋, 杨元喜, 曾安敏, 任夏. 弹性PNT概念内涵、特征及其辨析[J]. 测绘通报, 2023, 0(4): 79-86,176.

MING Feng, YANG Yuanxi, ZENG Anmin, REN Xia. The conceptual connotation,characteristics and discrimination of resilient PNT[J]. Bulletin of Surveying and Mapping, 2023, 0(4): 79-86,176.

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