测绘学报 ›› 2018, Vol. 47 ›› Issue (7): 893-898.doi: 10.11947/j.AGCS.2018.20180149

• 院士论坛 •    下一篇

弹性PNT基本框架

杨元喜   

  1. 地理信息工程国家重点实验室, 陕西 西安 710054
  • 收稿日期:2018-04-02 修回日期:2018-04-19 出版日期:2018-07-20 发布日期:2018-07-25
  • 作者简介:杨元喜(1956-),男,博士,研究员,中国科学院院士,研究方向为动态大地测量数据与卫星导航数据处理。
  • 基金资助:
    国家重点研发计划(2016YFB0501700)

Resilient PNT Concept Frame

YANG Yuanxi   

  1. State Key Laboratory of Geo-Information Engineering, Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China
  • Received:2018-04-02 Revised:2018-04-19 Online:2018-07-20 Published:2018-07-25
  • Supported by:
    The National Key Research and Development Program of China (No. 2016YFB0501700)

摘要: 描述了弹性定位、导航授时(PNT)的基本概念,给出了弹性PNT的基本定义,以及弹性PNT与综合PNT或多源PNT的关系,指出综合PNT是弹性PNT的基础;并将弹性PNT分解成弹性终端集成、弹性函数模型和弹性随机模型;讨论了弹性PNT终端集成策略与基本准则,强调多传感器的弹性集成必须依据优化设计准则,必须确保多信息源及多传感器的兼容与互操作;给出了弹性函数模型的概念模型,论述了相应弹性函数模型调整途径;阐述了几种可能的弹性随机模型优化策略,同时指出多源PNT信息弹性随机模型的改进与优化必须参照统一的方差因子;最后给出了基于弹性函数模型和弹性随机模型的状态参数估计方式。

关键词: 弹性PNT, 综合PNT, 微型PNT, 弹性函数模型, 弹性随机模型

Abstract: The concept of resilient positioning, navigation and timing (PNT) is described.The definition of resilient PNT is given from the point of view of sensors integration, functional model and stochastic model.The relationship between the integrated (or comprehensive) PNT and resilient PNT is analyzed. It is pointed out that the integrated PNT is the foundation of the resilient PNT.The resilient PNT should be divided into the resilient sensors integration, resilient functional model and resilient stochastic model.The strategy and the principle of resilient integration of sensors are discussed.The resilient integration of sensors should be designed following the optimal, available and compatible as well as interoperable principles.The concepts of resilient functional model and the possible modification strategies of the resilient functional model are also described.Several possible optimal routes for resilient stochastic model improvements are also set forth.It is also pointed out that the optimal improvements of stochastic models for multi PNT sources should follow the same variance scale.At last, the resilient PNT data fusion for state parameters are given based on the resilient functional and stochastic models.

Key words: resilient positioning, navigation and timing, integrated PNT, micro PNT, resilient functional model, resilient stochastic model

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