摘要
为了提高无线传感网络中节点的定位精度,同时又希望降低节点的定位开销,提出接收信号强度(RSSI)定位算法。以RSSI和三边定位原理为基础,详细阐述了该算法的定位思想,以伪代码的形式描述未知节点定位的实现过程。从存储、计算和通信开销3个方面与ALA方案做了定性分析,针对不同的冗余系数、不同的定位轮数和不同的信标数量进行了仿真,与ALA方案做了定量分析。分析结果表明,该算法达到了提高无线传感网络定位精度的目的。
To improve the localization accuracy in wireless sensor network,but also hope to reduce the overhead of locating nodes, an algorithm is proposed.With RSSI and trilateral positioning principle as the foundation,this paper elaborates ideological orientation, and describes the implementation process of unknown node localization in pseudo code form.Compared with ALA program,the storage, computing,and communication overhead are taken for qualitative analysis. Simulations are quantitatively analyzed with different redundancy factor,different positioning rounds and different numbers of beacon. The results show that the algorithm can improve the positioning accuracy of wireless sensor network.
出处
《无线电工程》
2015年第2期8-10,15,共4页
Radio Engineering
关键词
无线传感网络
RSSI
定位思想
wireless sensor network
RSSI
positioning algorithm
