航天发射场电力传输线WSN定位算法与仿真

Wireless sensor network localization algorithm of power transmission line in aerospace launch spot and simulation

为了准确、快速地查找航天发射场电力传输线故障的位置,在电力传输线上安装传感器用于故障定位。由于这些传感器呈线性分布,所以采用传统的DV-Hop算法进行传感器节点定位时,会导致定位失效。为此,提出一种改进的DV-Hop定位算法,该算法将电力传输线上的传感器等间距分布,计算最小跳步获得未知节点到信标节点的物理距离,采用双曲线定位算法求解出未知节点的坐标位置。最后,通过应用仿真,结果表明:改进的DV-HOP算法比传统的其他传感器定位算法的定位精确度高,且性能更加稳定,能够实现发射场电力传输线故障的快速、准确定位。

In order to accurately and quickly find the fault location of power transmission line in aerospace launch spot, the sensors are installed in transmission line to locate the fault position. These sensors are linearly distributed, which will lead to localization failure when the traditional DV-Hop algorithm is adopted to locate the sensor node. Therefore, an improved DV-Hop localization algorithm is put forward, which distributes the sensors of power transmission line in equal distance. The physical distance from unknown node to beacon node is acquired by calculating the minimum hop. The coordinates of unknown node are solved by hyperbola localization algorithm. Finally, through the application simulation, the results demonstrate that the localization accuracy of improved DV-Hop localization algorithm is higher than that of other traditional sensor localization algorithm, and its performance is more stable, which can realize the quick and accurate fault location of power transmission line in launch spot.