水下无线传感器网络目标定位算法

Algorithm of target location in Underwater Wireless Sensor Networks

摘要:

提出了一种基于目标位置的定位转换算法,通过对水下声波传播衰减的研究,推导出距离与声强度的公式,进一步由节点接收到目标强度信息计算出节点与目标的距离进行定位。当目标处在水下传感器网络内部时,根据节点接收到信号强度的大小,进行加权质心定位算法。为解决三维坐标系下目标深度的计算,通过在海面设置大功率骨干节点,通过主动探测声呐测得目标的距离与角度,从而计算出目标深度。仿真验证表明,本文算法的有效性。

Abstract:

A algorithm of transition location based on position of target was proposed. Through the research of underwateracoustic propagation attenuation, the formula between distance and acoustic intensity was deduced, ulteriorly, through thetarget’s acoustic intensity nodes detecting to calculate the position due to the distance between target and nodes. When tar.get was in underwater wireless sensor networks, the position of target was calculated by weighted centroid due to the signalintensity nodes get. Through the high power backbone nodes sea surface set, the distance and angle received by active so.nar, to calculate the depth of target. The effectiveness of the algorithm was verified by the simulation experiment.