一种高精度的无线传感器网络定位算法

A high precision localization algorithm for WSNs

定位技术是无线传感器网络的关键技术之一。在对DV-Hop算法深入分析的基础上,提出了一种改进的CBDV-Hop算法。该算法引入了共线度的概念,通过对共线度设置阈值,从而挑选出传感器网络中质量高的信标节点进行位置估计。理论分析和仿真实验证明:该算法可以显著提高定位精度。

Localization technology is one of the key technologies in wireless sensor networks （WSNs）. On the basis of analysis of the DV-Hop algorithm, an improved algorithm CBDV-Hop is brought out. The concept of collinearity is introduced into the algorithm. The algorithm sets a threshold of collinearity, and selects the high quality beacon node to estimate the position. Theoretical analysis and simulations experiment show that the algorithm can improve the localization precision.