无线通信网络入侵目标节点优化定位仿真

Wireless Communication Network Intrusion Target Node Optimization and Positioning Simulation

对无线通信网络的入侵目标节点定位,可有效提高无线通信网络的安全性和可靠性。对网络的入侵目标节点进行定位,传统方法先以网络节点定位误差为适应度函数,将网络入侵目标节点定位问题转换为求解非线性方程组优化问题,但忽略了信标节点与入侵目标节点间距离的修正,导致入侵节点定位精度低。提出基于smacof理论的入侵目标节点定位方法。获取无线通信网络各信标节点与网络入侵风险未知节点间的连通度,依据节点间连通度大小选择参与网络入侵目标节点定位的信标节点,组建网络节点接受信号强度指示测距模型,计算出网络通信标节点与网络入侵目标节点间的修正距离,利用smacof理论思想迭代误差函数来求解网络入侵目标节点的位置信息,有效地完成了对无线通信网络入侵目标节点定位。实验结果表明,所提方法定位精确度较高,同时能够有效提升无线通信网络信息安全性能。

An intrusion target node location method is proposed based on smacof theory. The connectivity between beacon node and node with unknown intrusion risk is acquired at first, then the beacon node participating in location of network intrusion node is selected. A distance＇ measurement model for node receiving signal strength indication is built to work out amendment distance between beacon node and target node. Iteration error function of smacof theory is used to solve location information of target node. Thus, the node location is completed effectively. Simulation re- suits show that the method has high location precision. It can improve information security of wireless communication network effectively.