摘要: 针对无线信道环境的复杂性和传感器节点的特点,提出一种改进的无线传感器网络到达时间定位算法。该算法无需额外的硬件支持,以接收节点回复时间信息的方式消除时间同步的要求,采用多次测量结果取平均的方式削弱随机噪声的影响。仿真结果证明,该算法定位精度高,实用性较好。
关键词:
无线传感器网络,
到达时间,
锚节点,
目标节点
Abstract: Aiming at the complexity of the wireless communication channel and the characteristics of the sensor nodes, this paper presents an improved Time Of Arrival(TOA) positioning algorithm, which does not need additional hardware. The receiver replies with the processing time automatically, so the time synchronization of nodes is not necessary. It averages the measuring results to reduce the influence of random noise. Simulation results show that the algorithm is of high positioning accuracy, and possesses better practicability.
Key words:
wireless sensor networks,
Time Of Arrival(TOA),
anchor node,
target node
中图分类号:
张 健;李 鸥;刘广怡. 改进的无线传感器网络到达时间定位算法[J]. 计算机工程, 2009, 35(19): 123-125.
ZHANG Jian; LI Ou; LIU Guang-yi. Improved TOA Positioning Algorithm for Wireless Sensor Networks[J]. Computer Engineering, 2009, 35(19): 123-125.