DV-hop定位算法参数优化仿真研究

Simulation Study of Parameter Optimization on DV-hop Localization Algorithm

在低功耗、低成本、低运算的无线传感器网络中,节点的定位精度受到局限。DV-hop定位算法作为一种经典的无需测距的定位算法,在实际应用中较容易实现,但研究者多致力于提高其定位精度,而对影响定位精度的参数的优化研究较少。在深入分析DV-hop定位算法的基础上,对影响DV-hop定位算法精度的主要参数包括锚节点数、节点通信半径以及网络中的节点总数进行分析和仿真。仿真结果表明,针对不同的节点总数,在锚节点数为12时,存在最优节点通信半径使其定位误差最小。

It is challenging to obtain the precise location of sensor nodes with low energy,less hardware requirement and little computation. DV-hop as a classical range-free localization algorithm is easily implemented in wireless sensor networks. However,with much more attention on positional accuracy,research on optimal parameters that influence the positioning accuracy is inadequate. This paper analyzed DV hop localization algorithm and simulated the main parameters affecting positioning performance of DV-hop localization algorithm,which include the number of anchors, the node communication range and the total number of nodes. The results show that there is the optimal node eom munication range to minimize the localization error in the different total number of nodes when the anchor node is 12.