论文标题
基于创新的远程国家估计保密
Innovation-Based Remote State Estimation Secrecy with no Acknowledgments
论文作者
论文摘要
在存在对抗性窃听器的情况下，远程状态估计的保密编码是一个精心研究的问题。典型的现有秘密编码方案取决于发射器对遥控器当前性能的了解。这种性能度量通常是通过数据包收据确认共享的。但是，在实际情况下，确认通道可能容易受到主动对手的干扰，从而导致秘密编码方案失败。旨在在确保保密的同时实现合法估算员的可靠状态估算，我们建议一个保密的编码计划，而无需数据包收据确认。我们的编码方案使用在发射器和合法接收器上建立的预先安排的调度顺序。我们向合法用户传输包含状态测量或编码信息的数据包。编码使数据包看起来是状态，但旨在损害窃听者的估计。选择了预割后的调度顺序和编码。我们分析了对一类窃听器的编码方案的性能，并显示了迫使窃听器具有无限估计性能的条件。此外，我们提供了数值插图，并将我们的编码方案应用于Power Systems中的应用程序。
Secrecy encoding for remote state estimation in the presence of adversarial eavesdroppers is a well studied problem. Typical existing secrecy encoding schemes rely on the transmitter's knowledge of the remote estimator's current performance. This performance measure is often shared via packet receipt acknowledgments. However, in practical situations the acknowledgment channel may be susceptible to interference from an active adversary, resulting in the secrecy encoding scheme failing. Aiming to achieve a reliable state estimate for a legitimate estimator while ensuring secrecy, we propose a secrecy encoding scheme without the need for packet receipt acknowledgments. Our encoding scheme uses a pre-arranged scheduling sequence established at the transmitter and legitimate receiver. We transmit a packet containing either the state measurement or encoded information for the legitimate user. The encoding makes the packet appear to be the state but is designed to damage an eavesdropper's estimate. The pre-arranged scheduling sequence and encoding is chosen psuedo-random. We analyze the performance of our encoding scheme against a class of eavesdropper, and show conditions to force the eavesdropper to have an unbounded estimation performance. Further, we provide a numerical illustration and apply our encoding scheme to an application in power systems.
