Kalman Filtering Based Protection Method of Sustained Satellite Time Synchronization Attack

Liang LIU; Sheng SU; Yijia CAO; Wenkai KUANG; Ye CAI; Heng ZHANG

doi:10.7500/AEPS20190704004

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Kalman Filtering Based Protection Method of Sustained Satellite Time Synchronization Attack

Application Research | 更新时间：2025-06-16

- Kalman Filtering Based Protection Method of Sustained Satellite Time Synchronization Attack
- Automation of Electric Power Systems Vol. 44, Issue 10, Pages: 119-126(2020)
- 作者机构：
  
  清洁能源与智能电网湖南省协同创新中心（长沙理工大学)，湖南省长沙市 410004
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China-State Grid Joint Fund for Smart Grid;National Natural Science Foundation of China;National Key R&D Program of China
- DOI：10.7500/AEPS20190704004
  CLC：
- Received：04 July 2019，
  
  Revised：2019-10-13，
  
  Published Online：01 April 2020，
  
  Published：25 May 2020
- 稿件说明：
移动端阅览
刘亮,苏盛,曹一家等.基于Kalman滤波的持续卫星时间同步攻击防护方法[J].电力系统自动化,2020,44(10):119-126.

LIU Liang,SU Sheng,CAO Yijia,et al.Kalman Filtering Based Protection Method of Sustained Satellite Time Synchronization Attack[J].Automation of Electric Power Systems,2020,44(10):119-126.
刘亮,苏盛,曹一家等.基于Kalman滤波的持续卫星时间同步攻击防护方法[J].电力系统自动化,2020,44(10):119-126. DOI： 10.7500/AEPS20190704004.

LIU Liang,SU Sheng,CAO Yijia,et al.Kalman Filtering Based Protection Method of Sustained Satellite Time Synchronization Attack[J].Automation of Electric Power Systems,2020,44(10):119-126. DOI： 10.7500/AEPS20190704004.

摘要

随着网络空间对抗加剧，借助全球卫星导航系统进行的网络攻击已发展成为现实威胁。慢速持续型卫星时间同步攻击可绕过电力时间同步系统中卫星时钟异常检测机制，诱骗被授时设备输出错误时间信息，再借助电力系统工作机制达成攻击破坏后果。提出了一种基于Kalman滤波的持续卫星时间同步攻击防护方法。首先构建了考虑持续时间干扰的Kalman滤波卫星授时模型；然后利用能量泛函正则化最优化估算恶意攻击下被授时设备的时钟偏差；最后根据所构建的补偿模型对钟差进行补偿、实现遭攻击条件下的精准时间同步。仿真结果表明，该方法可有效防范慢速持续型卫星时间同步攻击对电力时间同步系统的影响。

Abstract

Cyber-attack by the global navigation satellite system has become a real threat with the intensification of attack in cyber space. The slow sustained satellite time synchronization attack can bypass the anomaly detection mechanism of existing satellite clock

trick the timed device to output an incorrect clock signal

and cause serious damage via operation mechanism of the power system. A Kalman filtering based protection method of sustained satellite time synchronization attack is proposed. Firstly

a Kalman filtering based satellite timing model considering sustained malicious interference is developed. Then

clock bias of time synchronism device in malicious attack is optimized by energy functional regularization. Finally

the clock bias is compensated according to the constructed compensation model to achieve precise time synchronization in attack. Simulation results show that this method can effectively prevent the impact of slow sustained satellite time synchronization attacks on the time synchronism system.

关键词

Keywords

references

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