本文選題：無線傳感網(wǎng) + 安全定位��； 參考：《南京郵電大學(xué)》2017年碩士論文

【摘要】：隨著無線傳感網(wǎng)的快速發(fā)展,基于無線傳感網(wǎng)的應(yīng)用擴(kuò)展至環(huán)境監(jiān)控、物流調(diào)度、災(zāi)情預(yù)警等多個(gè)領(lǐng)域。無線傳感網(wǎng)定位作為基礎(chǔ)和重要技術(shù)之一越來越受到重視。無線傳感器網(wǎng)絡(luò)具有部署隨機(jī)、網(wǎng)絡(luò)拓?fù)湟鬃兓�、自組網(wǎng)的特點(diǎn),使得其定位過程更容易遭受各種攻擊。本文提出相應(yīng)的安全定位算法并通過實(shí)驗(yàn)驗(yàn)證了算法的有效性。本文主要包括以下三個(gè)方面的工作:(1)針對目前安全定位算法系統(tǒng)開銷較大,能夠應(yīng)對的攻擊類型較單一的問題,提出了基于信任評估的安全定位算法。該算法將信任管理的原理運(yùn)用到無線傳感網(wǎng)安全定位領(lǐng)域,通過對屬性值的選擇以及評分實(shí)現(xiàn)對節(jié)點(diǎn)的信任評估。除此之外對閾值進(jìn)行討論保證系統(tǒng)過濾攻擊節(jié)點(diǎn)的正確率。最終以較低的系統(tǒng)開銷剔除了攻擊節(jié)點(diǎn)保證了系統(tǒng)的安全性。(2)針對在錨節(jié)點(diǎn)移動(dòng)的環(huán)境下信任管理系統(tǒng)開銷較大的問題,提出了基于動(dòng)態(tài)信任管理的安全定位算法。該算法實(shí)現(xiàn)了對于節(jié)點(diǎn)的動(dòng)態(tài)信任管理,將信任管理劃分為信任初始化階段、信任建立階段、信任進(jìn)化階段三個(gè)階段。同時(shí)將攻擊行為抽象為事件通過有限狀態(tài)機(jī)加速信任值迭代過程。最終在錨節(jié)點(diǎn)移動(dòng)的情況下通過快速迭代信任值識別出惡意節(jié)點(diǎn),確保定位過程的安全性。(3)設(shè)計(jì)并實(shí)現(xiàn)了一種自適應(yīng)的安全定位系統(tǒng),該系統(tǒng)將基于信任評估的安全定位算法和基于動(dòng)態(tài)信任的錨節(jié)點(diǎn)移動(dòng)安全定位算法進(jìn)行結(jié)合,運(yùn)用到室內(nèi)定位系統(tǒng)中。將程序代碼燒寫到若干節(jié)點(diǎn)中,節(jié)點(diǎn)部署在10m x 10m的區(qū)域進(jìn)行實(shí)驗(yàn)。系統(tǒng)分別在錨節(jié)點(diǎn)靜止以及錨節(jié)點(diǎn)移動(dòng)兩種環(huán)境下工作,通過實(shí)驗(yàn)對比了一般情況下以及運(yùn)行本系統(tǒng)的情況下的定位誤差,表明本文提出的系統(tǒng)可以有效的識別惡意節(jié)點(diǎn),降低系統(tǒng)開銷。綜上所述,本文分別針對錨節(jié)點(diǎn)靜止以及錨節(jié)點(diǎn)移動(dòng)的應(yīng)用場景提出了基于信任評估的安全定位算法以及基于動(dòng)態(tài)信任評估的錨節(jié)點(diǎn)移動(dòng)安全定位算法。通過仿真實(shí)驗(yàn)以及實(shí)現(xiàn)的原型系統(tǒng)可知本文提出的算法能夠有效抵御攻擊行為并且比AR-MMSE等安全定位算法使用的系統(tǒng)資源更少。
[Abstract]:With the rapid development of wireless sensor network, the application based on wireless sensor network extends to many fields, such as environmental monitoring, logistics scheduling, disaster warning and so on. As one of the basic and important technologies, wireless sensor network positioning has been paid more and more attention. Wireless sensor networks (WSNs) have the characteristics of random deployment, network topology changes and ad hoc networks, which make the localization process more vulnerable to various attacks. In this paper, the corresponding security location algorithm is proposed and the effectiveness of the algorithm is verified by experiments. This paper mainly includes the following three aspects: 1) aiming at the problem that the current security localization algorithm has a large system overhead and can deal with a single attack type, a security location algorithm based on trust assessment is proposed. In this algorithm, the principle of trust management is applied to the security location field of wireless sensor network, and the trust evaluation of nodes is realized through the selection of attribute value and the evaluation of the score. In addition, the threshold is discussed to ensure the accuracy of the system filtering attack node. Finally, the attack node is eliminated with lower system overhead to ensure the security of the system. (2) aiming at the problem of high overhead of trust management system in the mobile environment of anchor nodes, a security location algorithm based on dynamic trust management is proposed. The algorithm realizes dynamic trust management for nodes, which is divided into three stages: trust initialization, trust establishment and trust evolution. At the same time, the attack behavior is abstracted as the event accelerates the trust value iterative process through the finite state machine. Finally, when the anchor node moves, the malicious node is identified by fast iterative trust value, which ensures the security of the location process. (3) an adaptive security location system is designed and implemented. The system combines the security location algorithm based on trust assessment and the mobile security location algorithm of anchor node based on dynamic trust, and applies it to the indoor positioning system. The program code is burned to several nodes, and the nodes are deployed in the region of 10m x 10m for experiment. The system works in the static anchor node and the anchor node moving environment respectively. Through the experiment, the positioning error of the system is compared with that of the system, which shows that the system proposed in this paper can identify the malicious node effectively. Reduce system overhead. To sum up, this paper proposes a security location algorithm based on trust assessment and an anchor node mobile security location algorithm based on dynamic trust evaluation for anchor node static and anchor node mobile application scenarios. Through the simulation experiments and the prototype system, we can see that the proposed algorithm can effectively resist the attack behavior and use less system resources than the secure location algorithm such as AR-MMSE.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP212.9;TN929.5

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