一种抗独立攻击的WSN三维安全定位算法

为解决无线传感器网络中节点定位缺乏安全性和定位精度不高的问题，基于最速下降法与牛顿迭代法提出了一种新的三维安全定位算法。该算法首先给出三维空间下未知节点定位的计算方法和独立攻击模型，然后利用最速下降法和恶意锚节点检测技术选出最优锚节点数据，并结合牛顿迭代法实现了快速高精度的三维安全定位。实验结果表明，在危险的环境下，该算法能有效抵抗独立攻击以及在定位精度和未知节点可成功定位率方面都具有较好的优势。

A 3D Secure Localization Algorithm Resistant to Non-Coordinated Attack in Wireless Sensor Network

To solve the problems about lower accuracy and lack of security of node location for wireless sensor net?work deployed in stereoscopic environments,a new three-dimensional secure localization algorithm is proposed by steepest descent method and Newton’s method. In this algorithm,firstly,the calculation method of unknown node lo?calization in three-dimensional space and the model of non-coordinated attack are presented. Secondly,it chooses the optimal anchor node data by using the steepest descent method and the detection technology of malicious anchor node. Then,combining with the Newton’s method,the algorithm achieves the fast and high-precision secure local?ization of three-dimensional space. The experimental results show that the algorithm can resist the non-coordinated attack in a dangerous environment effectively and do good advantages on the localization accuracy and localized rate of unknown node.