多跳无线网络干扰节点目标定位方法仿真

Jump More Wireless Network Node Target Disturbance Simulation

多跳无线网络的干扰攻击都是先从时域或频域角度展开的,为了更好地保障多跳无线网络的安全稳定性,需要进行多跳无线网络干扰节点目标定位方法的研究。但是采用当前方法对干扰节点目标定位时,无法构建干扰节点跳数与欧式距离的映射关系,存在多跳无线网络干扰节点目标定位误差大的问题。为此提出一种基于连续回归的多跳无线网络干扰节点目标定位方法。上述方法先基于被动监听推断多跳无线网络节点的度分布状态,选择度较大的节点作为干扰节点的初始目标,通过连续回归模型构建了干扰节点跳数与欧式距离的映射关系,估计未知干扰节点到信标节点之间的距离,给出观测数据的似然函数,得到干扰节点目标位置的最大似然估计,并作为依据进行多跳无线网络干扰节点目标定位。仿真证明,所提方法定位精度较高,可以有效降低多跳无线网络干扰源定位过程的定位误差,大幅度提升了多跳无线网络的运行质量。

ABSTRACT：A target location method of interference node in multi-hop wireless network based on continuous re- gression is put forward. On the basis of passive monitoring, the degree distribution of nodes in multi-hop wireless network is inferred. Then, the node with large degree is selected as the initial target of interference node. Through the continuous regression model, the mapping relationship between interfering node hops and Euclidean distance is constructed. Moreover, the distance between unknown interference node and beacon node is estimated. Thus, the likelihood function of observation data is given and the maximum likelihood estimation of target location of interference node is obtained. Finally, the target positioning of interference node in multi-hop wireless network node is per- formed. Simulation results show that the proposed method has high positioning accuracy, which effectively reduces the positioning error of localization process of interference source in multi-hop wireless networks and greatly improves the running quality.