基于跳数加权与跳距优化的3D-DVHop定位算法  

3D-DVHop Localization Algorithm Based on Hop Count Weight and Hop Distance Optimization

作　　者：张晶[1,2] 罗施章 付鑫 保峻嵘 徐亮 ZHANG Jing;LUO Shi-zhang;FU Xin;BAO Jun-rong;XU Liang(School of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Xiaorun Technology Service Co.,Ltd.,Kunming 650500,China;Yunnan Information Technology Development Center,Kunming 650228,China;Avionics Equipment Maintenance College,Changsha Aeronautical Vocational and Technical College,Changsha 410124,China)

机构地区：[1]昆明理工大学信息工程与自动化学院,云南昆明650500 [2]云南枭润科技服务有限公司,云南昆明650500 [3]云南省信息技术发展中心,云南昆明650228 [4]长沙航空职业技术学院航空电子设备维修学院,湖南长沙410124

出　　处：《控制工程》2021年第7期1409-1415,共7页Control Engineering of China

基　　金：云南省基础研究计划重点项目(202001AS070064);云南省技术创新人才项目(2019HB113);云南省“万人计划”产业技术领军人才项目。

摘　　要：为降低定位成本及计算量,在三维空间中常使用无需测距的3D-DVHop算法定位节点,而算法自身对跳数与跳距计算产生的误差会导致无法有效降低平均定位精度值,为此提出一种基于跳数加权与跳距优化的3D-DVHop定位算法,利用节点接收与传送的RSSI值有所差异,将两者商值作为跳数权值用以优化跳数值。结合跳数值使用算术平均法计算平均跳距,对所得平均跳距值采用最小均方误差和无偏估计进行优化处理,使得后续节点间的距离值计算更为精确,从而达到降低节点平均定位精度值的目的。In order to reduce the localization cost and calculation amount,3 D-DVHop algorithm without distance measurement is often used to locate nodes in three-dimensional space.However,the error generated by the algorithm itself in the calculation of hop count and hop distance will lead to the inability to effectively reduce the average localization accuracy value.Therefore,a 3 D-DVHop localization algorithm based on hop count weight and hop distance optimization is proposed.The RSSI values received and transmitted by nodes are different,and the quotient value of the two is used as the hop count weight value to optimize the hop count value.The arithmetic average method is used to calculate the average hop distance in combination with the hop count value.The minimum mean square error and unbiased estimation are adopted to optimize the obtained average hop distance value,so that the distance calculation between subsequent nodes is more accurate,thereby achieving the aim of reducing the average localization accuracy value of nodes.

关 键 词：三维空间 跳数 跳距 节点定位 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]