摘要
在文中综合研究了各种定位算法,对DV-Hop定位算法进行了详细阐述,并对算法本身的优缺点进行了全面分析。无线传感器网络中通常无法完全均匀布置,针对在非均匀的各向相异网络,以及密度过低网络中算法表现差的问题做了深入讨论。在此基础上引进RSSI测距,并使用Dijkstra算法选择路径,对算法进行改进。通过NS2模拟仿真实验证明了在非均匀网络及节点密度较小的网络中,改进后的算法可以有效地降低定位误差。
In this paper,all the localization algorithms for wireless sensor network have been researched deeply,especially DV-Hop,which was analyzed in the advantage aspects and disadvantage aspects. Based on all above works,introduced the RSSI measurement and Dijkstra arithmetic,the normal DV-Hop arithmetic has been changed. it has been proved by NS2 simulating experiment that the improved algorithm cut down the position error markedly in the unsymmetrical and sparse nodes distributing surroundings.
出处
《微计算机信息》
2009年第34期76-78,共3页
Control & Automation
