摘要：

无线传感器网络获取消息节点的位置需进行实时定位,但由于传感器节点存在能量有限、可靠性差等不足,考虑到能耗和硬件的限制,提出一种基于接收信号强度指示(RSSI)的定位算法。利用未知节点从锚节点处接收到的RSSI值序列估计未知节点的位置,锚节点在监测区域中按照特定的轨迹运动,以覆盖区域内所有的点。仿真结果表明,该算法是可行的,且具有较高的定位精度。

关键词: 无线传感器网络, 接收信号强度指示, 移动锚节点, 定位技术, 距离误差

Abstract:

The location of the Wireless Sensor Network(WSN) to obtain the message node needs to be located real time.However,due to the limited energy and poor reliability of the sensor node,a localization algorithm based on Received Signal Strength Indication(RSSI) is proposed,considering the limitation of power consumption and hardware.The location of the unknown node is estimated by the sequence of RSSI values received by the unknown node from the anchor node,and the anchor node moves according to a specific trajectory in the monitoring area,covering all points in the area as much as possible.Simulation results show that the algorithm is feasible and has high localization accuracy.

Key words: Wireless Sensor Network(WSN), Received Signal Strength Indication(RSSI), mobile anchor node, localization technology, distance error

中图分类号: 

• TP391