无线传感器网络中一种改进的APIT定位算法  

Improved APIT positioning algorithm in wireless sensor network

作　　者：韩彪[1] 徐昌彪[1] 袁海[2] 彭磊[2] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]中国科学院深圳先进技术研究院,广东深圳518067

出　　处：《计算机工程与应用》2008年第4期122-124,共3页Computer Engineering and Applications

摘　　要：通过对无线传感器网络节点定位机制的研究,针对APIT定位算法中锚节点(anchors,即位置已知节点)稀疏而带来的定位精度低的问题,提出了一种改进的APIT定位算法。该算法结合了anchors对未知节点的影响因子和质心算法。仿真实验表明该算法在anchors稀疏的情况下,能明显提高定位精度,具有较普遍的工程应用意义。The paper researches localization algorithms of wireless sensors network and proposes an improved APIT localization algorithm to solve the problem of the low localization accuracy in wireless sensor networks where the density of anchors is low. The inference of anchors to unknown nodes and centroid algorithm are included.Simulations show that the new localization algorithm can improve localization accuracy markedly and it can be applied to many practical applications.

关 键 词：APIT定位算法 无线传感器网络 质心算法 

分 类 号：TN92[电子电信—通信与信息系统]