| Wireless sensor network (WSN) is a new kind of information collecting system, it detects and collects various kinds of target information from different areas in real time. This technology does not only widely applied in the areas of environmental monitoring, intelligent household appliances, intelligent traffics and anti-terrorism attack, but also merged with the C4ISR, which help us to achieve a global covered seamless network which consist of WSN, information network and military affairs network, will be immense improving the overall function of warfare system.Localization technology is an important part of WSN, it is the base of target tracking and can lock the position of nodes in network. With the expending application range of the WSN, higher requirement has been proposed to Localization technology. In the condition, the localization technology earn more researchers attention and the algorithms that only concern with localization precision and localization effective energy are not enough.The major part of the WSN localization technology is discussed in this paper, which contain the localization technology of mobile nodes and security problems. Analysis and simulation results show that the method proposed in this paper is meaningful and better than others.In this dissertation, first introduce the research content, the present situation, tendency and the mostly challenge for current WSN implement localization of node and secure localization of node. Expatiate backdrop of subject and significance for the dissertation, summarizes the research evolve, mostly basic and proposed secure localization algorithms. Otherwise, in this dissertation, we address the situation for WSN.Next, for dynamic sensor network incessant development and loo out on mostly challenge. Concerning the mobile nodes, localization technology researches and other key points based on mobile network are discussed and a localization technology based on angle is proposed in this paper. The localization technology make use of the variable directional antenna loaded in anchor and the estimation node area of Monte Carlo minimize algorithm to improve the performance of the dynamic position finding. The analysis and simulation result show that the proposed method has a fast constringency speed and can improve the precision of the location estimation.Finally, the security is one of three major evaluation standards of the localization technology; it plays an important role in various application areas of WSN. The security of the WSN localization technology is discussed in this paper. Based on a typical centralize localization algorithm and making use of the Cramer-Rao boundary theorem, using dynamic verity node method the combining with the centralize localization algorithm, a secure centralize localization method based on the verity nodes is presented and analyzed. The analysis and the simulation results show that the proposed secure localization method can achieve better performance in security, calculate cost and network cost.Since applying secure centralize localization algorithm in large-scale WSN is difficult problem, a secure localization algorithm suitable for large-scale WSN is discussed in this paper. There are two kinds of attack patterns aiming at localization course: one attack pattern is the unchangeable net-connectivity and the other is changeable net-connectivity. According to the characteristic of attack patterns, base-point checkout method and net-connectivity detection algorithm are presented respectively in this paper to resist the attack. The analysis and simulation results show that, under the appropriate choice of the parameters, the proposed method can achieve better performance for resisting various kinds of attacks aiming at localization course of WSN. Moreover, the method is proposed according to the static environment; however, since it is independent to the localization algorithm, and can be easily expended to the dynamic environment by combining the mobile WSN localization algorithm with dynamic environment.
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