基于无线传感器网络的舱室内船员位置估计算法

Design of estimation algorithm for ship indoor crew position based on wireless sensor network

为保证舱室内人员的安全,提升船舶在航行过程中的管理能力,设计基于无线传感器网络的舱室内船员位置估计算法。在舱室内的固定位置放置参考节点,同时在船员身上放置定位节点,定位节点的定位请求发送给参考节点,当定位节点接收到参考节点自身坐标的信号强度时,通过接收信息强度指示定位算法测量参考节点和定位节点之间的间距,采用高斯滤波方式对测量结果进行去噪;通过三边定位算法求出定位节点具体位置,实现船舶室内船员位置估计。实验结果表明,该算法能够有效去除RSSI严重失真数据,船员实际位置估计准确,测得参考节点与定位节点之间的有效距离较长,且具有较高的穿透力和测距精度。

In order to ensure the personal safety of personnel inside the ship and enhance the management ability of the ship during navigation,a wireless sensor network-based algorithm for estimating the position of crew members inside the ship is designed.Place a reference node at a fixed position inside the ship's interior,and also place a positioning node on the crew inside the ship.The positioning request of the positioning node is sent to the reference node.When the positioning node receives the signal strength of the reference node's own coordinates,the receiving information strength indicates that the positioning algorithm measures the distance between the reference node and the positioning node.Gaussian filtering is used to denoise the measurement results.Calculate the specific position of the positioning node through the trilateral positioning algorithm,and achieve the estimation of the indoor crew position on the ship.The experimental results show that this algorithm can effectively remove severely distorted RSSI data,accurately estimate the actual position of the crew,measure the effective distance between the reference node and the positioning node,and have high penetration and ranging accuracy.