计算机应用与软件Issue(2)：102-106,5.DOI:10.3969/j.issn.1000-386x.2016.02.025
无线传感器网络 APIT 算法边界效应的改进
IMPROVEMENT OF BOUNDARY EFFECTS OF APIT IN WSN
摘要
Abstract
In wireless sensor networks,for the problem that the boundary effects existing in APIT algorithm cause the lack of localisation precision,we proposed an improved localisation algorithm which is based on the sum of signal strength of nodes (SAPIT).The SAPIT algorithm determines the minimum sum of signal strength of three anchor nodes received by all the nodes in triangle before the PIT test.Then the algorithm uses the minimum sum to eliminate the neighbour nodes incurring the boundary effects.Finally,it combines PIT test with gird scanning algorithm to determine the coordinate positions of the unknown nodes.Simulation results showed that the SAPIT algorithm reduced the probabilities of occurrence of in-to-out error and out-to-in error,and effectively improved the precision of nodes localisation.关键词
无线传感器网络/边界效应/信号强度和/定位精度Key words
Wireless sensor networks/Boundary effects/Sum of signal strength/Localisation precision分类
信息技术与安全科学引用本文复制引用
冀常鹏,丰竹松,华一阳..无线传感器网络 APIT 算法边界效应的改进[J].计算机应用与软件,2016,(2):102-106,5.基金项目
国家自然科学基金项目（61172144）。 （）
