科技广场
科技廣場
과기엄장
SCIENCE TECHNOLOGY PLAZA
2014年
12期
94-97
,共4页
无线传感器网络%节点定位%APIT
無線傳感器網絡%節點定位%APIT
무선전감기망락%절점정위%APIT
Wireless Sensor Networks%Node Localization%APIT
APIT改进定位算法结合网格扫描方法，未知节点一旦被定位就充当起信标节点的功能，向周围邻居发送自己的估计坐标信息，把已经定位的未知节点与信标节点同等对待。通过MATLAB进行仿真，实验证明，该算法不仅减小了定位误差，并且提高了定位覆盖率，表明APIT改进定位算法有一定优势。
APIT改進定位算法結閤網格掃描方法，未知節點一旦被定位就充噹起信標節點的功能，嚮週圍鄰居髮送自己的估計坐標信息，把已經定位的未知節點與信標節點同等對待。通過MATLAB進行倣真，實驗證明，該算法不僅減小瞭定位誤差，併且提高瞭定位覆蓋率，錶明APIT改進定位算法有一定優勢。
APIT개진정위산법결합망격소묘방법，미지절점일단피정위취충당기신표절점적공능，향주위린거발송자기적고계좌표신식，파이경정위적미지절점여신표절점동등대대。통과MATLAB진행방진，실험증명，해산법불부감소료정위오차，병차제고료정위복개솔，표명APIT개진정위산법유일정우세。
The APIT positioning algorithm uses grid scanning method. An unknown node is regard as beacon node once located, and it will send its own coordinate to neighbors, so that the located unknown node can be equal treated with beacon nodes. We make a simulation with MATLAB and the experiments show that this algorithm not only reduces the positioning error, but also improves the localization coverage, which indicates that the APIT posi-tioning algorithm has certain advantages.
