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arXiv 1912.06362cs.CReess.SP
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基于RSSI的传感器网络恶意节点安全定位

RSSI-based Secure Localization in the Presence of Malicious Nodes in Sensor Networks

Bodhibrata Mukhopadhyay, Seshan Srirangarajan, Subrat Kar

摘要:

传感器网络中传感器节点确定其位置的能力在许多应用中是重要的。基于位置的服务的基础设施很容易成为恶意攻击的目标。我们解决恶意节点试图以不协调或协调的方式破坏目标节点的本地化过程的情况。我们提出了四种安全本地化技术:加权最小二乘(WLS),安全加权最小二乘(SWLS),和$\ell_1$规范为基础的技术LN-1和LN-1 E,在一个网络中,包括一个或多个受损的锚节点。WLS和SWLS技术被证明提供了显着的优势,现有的技术,通过分配更大的权重,更接近目标节点的锚节点,并通过检测恶意节点,并消除他们的测量从本地化过程。在协同攻击中,定位问题可以被视为平面拟合问题,其中来自非恶意和恶意锚节点的测量位于两个不同的平面上。LN-1 E技术估计这两个平面并防止定位过程的中断。的Cramer-Rao下界(CRLB)的位置估计也来自。所提出的技术,以提供更好的定位精度比现有的算法。

英文摘要:

The ability of a sensor node to determine its location in a sensor network is important in many applications. The infrastructure for the location-based services is an easy target for malicious attacks. We address scenarios where malicious node(s) attempt to disrupt, in an uncoordinated or coordinated manner, the localization process of a target node. We propose four techniques for secure localization: weighted least square (WLS), secure weighted least square (SWLS), and $\ell_1$-norm based techniques LN-1 and LN-1E, in a network that includes one or more compromised anchor nodes. WLS and SWLS techniques are shown to offer significant advantage over existing techniques by assigning larger weights to the anchor nodes that are closer to the target node, and by detecting the malicious nodes and eliminating their measurements from the localization process. In a coordinated attack, the localization problem can be posed as a plane fitting problem where the measurements from non-malicious and malicious anchor nodes lie on two different planes. LN-1E technique estimates these two planes and prevents disruption of the localization process. The Cramer-Rao lower bound (CRLB) for the position estimate is also derived. The proposed techniques are shown to provide better localization accuracy than the existing algorithms.

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