摘要
针对水下传感网中研究较少的移动节点定位问题,基于传统定位中常用的Chan算法,提出了一种改进的M-Chan算法。该算法通过曲线拟合进行运动轨迹预测,并利用节点的移动特性修正估计位置,从而提高了水下移动节点的定位精度。仿真结果表明,在不同的移动速度、通信半径、锚节点密度情况下,改进算法与传统的Chan算法相比,精度提高5%～10%。
The underwater WSN mobile node localization problem is directed,about which people are less concerned,and an improved algorithm is proposed based on common Chan algorithm.The new algorithm forecasts trajectory through the curve fitting,and revises the estimated location according to mobility characteristic of nodes,thereby improve the localization accuracy of underwater mobile nodes.The simulation shows that,in different scenarios of speed,communication radius and anchor nodes density,compared with traditional Chan algorithm,the ingenious M-Chan algorithm improves the positioning accuracy by 5%~10%.
出处
《传感技术学报》
CAS
CSCD
北大核心
2012年第2期268-272,共5页
Chinese Journal of Sensors and Actuators
基金
常州市海事局委托开发项目
