无线传感器网络节点定位技术

Wireless Sensor Networks Node Location Technology

对无线传感器网络定位技术进行了深入的探讨,从WSN节点的定位机制、定位算法的分类、已有的定位算法及算法性能的评价标准等方面进行分析,并对比了质心定位算法、DV-Hop算法、凸规划定位算法、APIT算法等几种经典的方法。结果表明:各种算法在不同的应用环境下所表现的性能差别较大,没有哪种算法是最优的,应根据最感兴趣的性能指标选择合适的算法。最后提出了无线传感器网络节点定位技术需要解决的问题和研究方向。

This paper presents a thorough discussion about the location technology of the sensor network that was analyzed in some aspects such as the basic principle of the localization, classification of location algorithms, the existing location algorithms, and performance evaluation criteria of the algorithms in detail. We have compared the performance of some classic algorithms, such as centroid localization algorithm, DV-Hop algorithm, convex programming localization algorithm and APIT algorithm etc. Analysis results show that the application of various algorithms in different environments have shown great differences in the performance. None of the algorithms is optimal. We should select the appropriate algorithm based on performance indicators of most interest. At last, this paper proposes the problems to be solved and the research direction of the wireless sensor network node location technology.