基于移动信标的水下无线传感器网络定位算法

针对现有水下无线传感器网络定位算法定位精度不足且无法适应水下多变的网络拓扑的问题，提出一种基于移动信标的水下无线传感器网络定位算法。首先通过RSSI测距定位和DV-Hop算法获取未知节点的大致分布情况，其次以未知节点定位覆盖率作为目标函数，采用经过自适应惯性权重和柯西-t扰动策略优化的改进秃鹰搜索算法迭代求解信标节点移动的最优位置，最后信标节点移动到最优位置再对未知节点进行重新定位。仿真结果表明,与对比算法相比，移动信标节点定位算法能有效提高未知节点定位精度，在网络拓扑变化时也能保持较高的定位精度且定位效果稳定。

Localization algorithm for underwater wireless sensor networks based on mobile beacon

Aiming at the problem that the existing underwater wireless sensor network positioning algorithm has insufficient positioning accuracy and cannot adapt to the underwater changeable network topology, an underwater wireless sensor network positioning algorithm based on mobile beacon is proposed. Firstly, RSSI ranging positioning and DV-Hop algorithm are used to obtain the approximate distribution of unknown nodes. Secondly, taking the positioning coverage rate of unknown nodes as the objective function, the improved bald eagle search algorithm optimized by adaptive inertia weight and Cauchy-t disturbance strategy is used to iteratively solve the optimal position of beacon node movement. Finally, the beacon node moves to the optimal position and then the unknown node is repositioned. The simulation results show that compared with the comparison algorithm, the mobile beacon node localization algorithm can effectively improve the positioning accuracy of unknown nodes, and can also maintain high positioning accuracy and stable positioning effect when the network topology changes.