| 摘要: |
| 从攻击者的角度研究多传感器系统的安全性问题, 该系统配备有分散式卡尔曼滤波器和chi^2检测器.恶意攻击者通过修改新息序列以达到破坏系统性能的目的.为了最大程度地破坏系统性能,以数学期望的形式推导出子系统误差协方差表达式,并量化其与融合误差协方差的关系.此外,结合矩阵理论,分析受攻击前后系统性能指标的变化并给出可躲避chi^2检测器的最优线性欺骗攻击形式.最后,通过一个数值仿真例子验证所提出攻击策略的有效性. |
| 关键词: 多传感器系统 安全性 线性欺骗攻击 分散式状态估计 chi^2检测器 最优攻击策略 |
| DOI：10.13195/j.kzyjc.2019.0046 |
| 分类号:TP273 |
| 基金项目:国家自然科学基金项目(61773097)；中央高校基本科研专项业务费资金项目(160402004). |
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| Design of optimal linear deception attack for multi-sensor system |
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YE Dan1,2,WANG Ji-yan1
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(1. College of Information Science and Engineering,Northeastern University,Shenyang110004,China;2. State Key Laboratory of Synthetical Automation of Process Industries,Northeastern University,Shenyang110004,China)
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| Abstract: |
| A security issue in multi-sensor systems is investigated from the standpoint of a malicious attacker. The considered system is equipped with a decentralized Kalman filter and chi^2 detectors. A malicious attacker intends to destroy the system performance by modifying the measurement innovation. To damage the system performance as much as possible, we derive the subsystems error covariances in the form of mathematical expectations and then quantify their relation with the error covariance of the fused system. Furthermore, by utilizing the matrix theory, we analyze the difference of performance metrics before and after an attack. And the optimal linear deception attack strategy can be obtained, which can successfully avoid being detected by the chi^2 detector. Finally, a numerical example is given to demonstrate the effectiveness of the proposed attack strategy. |
| Key words: multi-sensor system security linear deception attack decentralized state estimation chi^2 detector optimal attack strategy |
