基于到达时间的无线传感器网络协作定位算法  

Cooperative localization algorithm based on time-ofarrival in wireless senor network

作　　者：卢倩倩 李有明[1] 常生明 李娜娜 LU Qianqian;LI Youming;CHANG Shengming;LI Nana(Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《电信科学》2019年第1期62-66,共5页Telecommunications Science

基　　金：国家自然科学基金资助项目(No.61571250);浙江省自然科学基金资助项目(No.LY18F010010)~~

摘　　要：提出了一种基于到达时间的无线传感器网络协作定位方法。首先,建立关于目标位置的优化问题,其次通过运用混合半正定和二阶锥松弛理论,将原非凸优化问题转换为一种凸的优化问题,由此快速得到原问题的一个次优解。计算机模拟结果显示,新算法估计均方根误差更接近克拉美-罗界。A novel cooperative location method based on time-of-arrival in wireless senor networks was proposed. Firstly,the optimization problem for the target location was established.Secondly,the mixed semi-positive definite and second-order cone relaxation techniques were used to convert the original non-convex problem into a convex op- timization problem.In this way,a fast suboptimal solution to the original problem was obtained.Finally,computer simulations show that the proposed method has lower root mean square error (RMSE)which is closer to the Cramer-Rao lower bound (CRB).

关 键 词：到达时间 协作定位 混合半正定和二阶锥松弛 克拉美-罗界 

分 类 号：TP929.5[自动化与计算机技术]