电脑开发与应用
電腦開髮與應用
전뇌개발여응용
COMPUTER DEVELOPMENT & APPLICATIONS
2013年
10期
14-17,20
,共5页
无线传感器网络%DV-HOP定位算法%改进的平均跳距%位置修正因子%定位精度
無線傳感器網絡%DV-HOP定位算法%改進的平均跳距%位置脩正因子%定位精度
무선전감기망락%DV-HOP정위산법%개진적평균도거%위치수정인자%정위정도
wireless sensor network%DV-HOP localization algorithm%improved average distance%position correction factor%positioning accuracy
针对传统DV-HOP算法在锚节点随机分布情况下定位误差和计算量较大的问题,提出了基于改进的平均跳距和位置修正的DV-HOP定位算法,根据节点的分布情况,锚节点计算其权值来动态调整其平均跳距,同时引入位置修正因子对用2种方法得到的位置信息进行修正,减少了定位误差,提高定位精度。仿真结果表明,改进算法在不同的锚节点数和不同的锚节点比例情况下都有较好性能,和传统DV-HOP算法相比定位误差明显减小,定位精度明显提高。
針對傳統DV-HOP算法在錨節點隨機分佈情況下定位誤差和計算量較大的問題,提齣瞭基于改進的平均跳距和位置脩正的DV-HOP定位算法,根據節點的分佈情況,錨節點計算其權值來動態調整其平均跳距,同時引入位置脩正因子對用2種方法得到的位置信息進行脩正,減少瞭定位誤差,提高定位精度。倣真結果錶明,改進算法在不同的錨節點數和不同的錨節點比例情況下都有較好性能,和傳統DV-HOP算法相比定位誤差明顯減小,定位精度明顯提高。
침대전통DV-HOP산법재묘절점수궤분포정황하정위오차화계산량교대적문제,제출료기우개진적평균도거화위치수정적DV-HOP정위산법,근거절점적분포정황,묘절점계산기권치래동태조정기평균도거,동시인입위치수정인자대용2충방법득도적위치신식진행수정,감소료정위오차,제고정위정도。방진결과표명,개진산법재불동적묘절점수화불동적묘절점비례정황하도유교호성능,화전통DV-HOP산법상비정위오차명현감소,정위정도명현제고。
For convention DV-HOP algorithm, the node localization errors and computation are large. A DV-HOP location algorithm based on improved average distance and correction in position for wireless sensor networks was proposed, each anchor node calculates its weight to dynamic adjust the average distance according to nodes distribution, while position correction factor was use to correct the location information, and the position error was reduced and the position accuracy was improved. Simulation results show that in different proportion and number of nodes, our algorithm has better performance, compared with the convention DV-HOP algorithm, the position error can be reduced significantly and the accuracy can be improved significantly.