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Application of robust Kalman filter to time-frequency system integrity monitoring
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Yu GUO1, 2, Ming MA1, 2, *, Jing PENG1, 2, Hang GONG1, 2, Sixin WANG1, 2
Journal of National Niversity of Defense Technology | 2025, 47(6) : 253 - 263
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Journal of National Niversity of Defense Technology | 2025, 47(6): 253-263
• Control Science and Engineering·Information and Communication Engineering·Electronic Science and Technology •
Application of robust Kalman filter to time-frequency system integrity monitoring
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Yu GUO1, 2, Ming MA1, 2, *, Jing PENG1, 2, Hang GONG1, 2, Sixin WANG1, 2
Affiliations
  • 1.College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
  • 2.National Key Laboratory for Positioning, Navigation and Timing Technology, Changsha 410073, China
Published: 2025-12-28 doi: 10.11887/j.issn.1001-2486.25040037
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In order to improve the sensitivity of time-frequency system integrity monitoring, a time-frequency system integrity monitoring method based on robust Kalman filter was proposed.In this method, a robust Kalman filter model was constructed using the historical measurement data of time difference, the time difference prediction bias and the frequency bias were estimated in real time, and the consistency detection was carried out separately, so that the integrity monitoring was realized.The model and method were verified through measured data and simulation analysis, and the results show that:this method can effectively detect and identify single faults of phase jump and frequency jump, and alarm the user;in a single fault scenario, compared with the traditional integrity monitoring method, the detection sensitivity is increased by about 25.0%;in a multi-fault scenario, the method can effectively detect faults, but there is a problem of insufficient fault identification, and the detection sensitivity is reduced by about 26.2% compared to a single fault, but it is still better than the traditional method.

time-frequency system  /  integrity monitoring  /  robust Kalman filter  /  sensitivity
Yu GUO, Ming MA, Jing PENG, Hang GONG, Sixin WANG. Application of robust Kalman filter to time-frequency system integrity monitoring[J]. Journal of National Niversity of Defense Technology, 2025 , 47 (6) : 253 -263 . DOI: 10.11887/j.issn.1001-2486.25040037
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Year 2025 volume 47 Issue 6
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Article Info
doi: 10.11887/j.issn.1001-2486.25040037
  • Receive Date：2025-04-21
  • Online Date：2026-04-16
  • Published：2025-12-28
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  • Received：2025-04-21
Affiliations
    1.College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
    2.National Key Laboratory for Positioning, Navigation and Timing Technology, Changsha 410073, China
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