摘要
在无线传感器网络中,节点定位占有极其重要的一席之地。无需测距方案中的DV-Hop算法因其计算简单易于实现得到广泛应用。传统DV-Hop算法不能够提供相对好的定位精度,为了保证定位的准确性,文章对DV-Hop算法进行了优化。在优化算法中,采用加权误差修正锚节点的估计平均跳距使其更加接近实际值,之后采用二维双曲线算法代替三边法或最小二乘算法确定接近实际位置的待测节点坐标。仿真结果验证了文章提出算法在无线传感器网络中定位的准确性。
Node localization plays an signi cant importance role in wireless sensor network.DV-Hop algorithm is a range free algorithm that is widely used of its simple calculation and easy implementation.Traditional DV-Hop algorithm cannot provide relatively better localization accuracy.To ensure the accuracy of localization,an improved DV-Hop localization algorithm is proposed.Under this localization algorithm,using a novel weighted error corrected the average jump distance of the anchor node,and then adopt two-dimensional hyperbolic function instead of the classic trilateration\\least square method to determine the locations of unknown nodes,which are very close to their actual locations.Simulations are conducted to validate the accuracy of our proposed localization algorithm in wireless sensor networks.
作者
董晶
陈智
DONG Jing;CHEN Zhi(School of Computing and Artificial Intelligence,Lanzhou University of Information Science and Technology,Lanzhou 730300,China)
出处
《无线互联科技》
2024年第15期24-27,51,共5页
Wireless Internet Science and Technology
