基于方向决策的移动锚节点动态路径规划方法

在基于移动锚节点的无线传感器网络定位过程中,移动锚节点的路径规划问题对定位性能有着重要的影响,但现有的路径规划方法没有充分考虑到网络内未知节点的密度以及分布情况,定位效率低且成本大,因此提出了一种基于方向决策的移动锚节点动态路径规划方法CWDP(Dynamic Path Planning Based on Orientation Decision-Classed Weighted).首先网络内的未知节点根据连通度阈值对自身进行分级处理,当移动锚节点进入网络区域后,根据通信范围内未知节点的反馈信息,再利用分级权重系数实时决策下一目标的移动方向.仿真结果表明,该方法有效地提高了网络内未知节点的定位覆盖率和降低了定位误差,并节约了定位成本.

Dynamic Path Planning Method of Mobile Anchor Node Based on Direction Decision

In the process of wireless sensor network location based on mobile anchor nodes,the path planning prob-lem of mobile anchor nodes has important influence on the positioning performance. However,the existing path plan-ning method does not take full account of the density and distribution of unknown nodes in the networks,the positio-ning efficiency is low and the cost is large. Therefore,a dynamic path planning method of mobile anchor node based on direction decision is proposed ( Dynamic Path Planning Based on Orientation Decision-Classed Weighted, CWDP). Firstly,the unknown nodes in the network are graded according to the connectivity threshold. When the mobile anchor nodes enters the network area,according to the feedback information of the unknown nodes located in the communication range,the mobile anchor next moving direction is determined by using the hierarchical weight coefficient in real time. The simulation results show that the proposed method can effectively improve the localization coverage,reduce the localization error of the unknown nodes in the network and save the localization cost.