Bulletin of Surveying and Mapping ›› 2023, Vol. 0 ›› Issue (4): 79-86,176.doi: 10.13474/j.cnki.11-2246.2023.0108

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The conceptual connotation,characteristics and discrimination of resilient PNT

MING Feng1,2, YANG Yuanxi1,2, ZENG Anmin1,2, REN Xia1,2   

  1. 1. State Key Laboratory of Geo-Information Engineering, Xi'an 710054, China;
    2. Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China
  • Received:2022-06-01 Published:2023-04-25

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

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