无线传感器网络无锚点战场伤员定位方法研究

Study on Method for WSN-based Anchor-free Casualty Localization in Battlefield

目的:以野战伤员搜救为背景,研究一种新的无线传感器网络无锚点战场伤员定位方法。方法:未知位置的士兵节点被标记为唯一的ID号;各节点时间同步,同时发送、采集和汇总RSSI数据,形成无线传感器网络邻居连通关系图;计算士兵节点的相对坐标,确定网络中士兵节点的位置。结果:在随机均匀分布和随机网格分布中,该方法均能够有效地实现定位;在相同环境下,随机网格分布的定位效果相对更好;卫生员沿距离减小的方向行进,能够到达伤员位置。结论:提出的无锚点定位方法能够在作战区域实现伤员的定位。

Objective To develop a new method for WSN-based anchor-free localization for searching and rescuing the wounded in battlefield.Methods The soldiers with unknown position were marked with unique node IDs.With the time of all nodes synchronized,RSSI data were sent,acquired and summarized at the same time,and then a wireless sensor network by self-organization was formed.The relative coordinate of the node was calculated to determine its position.Results In both distributions of random uniformly and random grid,the developed method achieved effective result and in the same condition,the effect of random grid distribution was better.Following the direction of reduced distance,the lifeguard could effectively find the wounded.Conclusion The proposed method of anchor-free localization can be effectively applied for the wounded localization in combat area.