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arXiv 2402.09810eess.SP
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可信无人机协同定位:性能与安全的信息分析

Trustworthy UAV Cooperative Localization: Information Analysis of Performance and Security

Zexin Fang, Bin Han, Hans D. Schotten

AI总结:

本文提出可信框架,推导三维协同定位CRLB,提出MAGD应对移动性,并针对虚假信息提出TAD异常检测与RP机制,通过数值模拟验证性能与安全。

摘要:

本文提出了一个可信框架,用于在多无人机(UAV)系统中实现精确的协同定位。推导了三维(3D)协同定位网络的克拉美-罗下界(CRLB),特别关注涉及锚节点非均匀空间分布的实际场景。随后,针对移动性挑战,提出了移动自适应梯度下降(MAGD)方法。在系统安全方面,我们推导了在虚假信息影响下定位的CRLB。研究了注入此类信息的方法和策略及其对系统性能的影响。为确保在虚假数据下的鲁棒性能,我们提出了一种名为时间演化异常检测(TAD)的缓解方案。此外,我们针对对手资源受限的现实场景,对系统性能关于虚假信息的密度和强度进行了建模。在理解协同定位的脆弱性后,我们应用TAD并从对手的角度制定了一个优化问题。接下来,我们讨论了异常检测器的设计原则,重点强调了降低该最优值与系统性能之间的权衡。此外,我们还部署了信誉传播(RP)机制,以充分利用异常检测并进一步优化TAD。我们提出的方法通过数值模拟进行了验证。

英文摘要:

This paper presents a trustworthy framework for achieving accurate cooperative localization in multiple unmanned aerial vehicle (UAV) systems. The The Cramer-Rao Lower Bound (CRLB) for the three-dimensional (3D) cooperative localization network is derived, with particular attention given to practical scenarios involving non-uniform spatial distribution of anchor nodes. Challenges of mobility are then addressed with Mobility Adaptive Gradient Descent (MAGD). In the context of system security, we derive the CRLB of localization under the influence of falsified information. The methods and strategies of injecting such information and their impact on system performance are studied. To assure robust performance under falsified data, we propose a mitigation solution named Time-evolving Anomaly Detection (TAD). Furthermore, we model the system performance regarding the density and magnitude of falsified information, focusing on realistic scenarios where the adversary is resource-constrained. With the vulnerability of cooperative localization understood, we apply TAD and formulate an optimization problem from the adversary's perspective. Next, we discuss the design principles of an anomaly detector, with emphasis of the trade-off of reducing such optimum and system performance. Additionally, we also deploy a reputation propagation (RP) mechanism to fully utilize the anomaly detection and further optimize the TAD. Our proposed approaches are demonstrated through numerical simulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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