| 非视距环境下基于RSS-TOA的定位算法 |
| |
| 引用本文： | 卢志刚,李有明,贾向红,常生明,王晓丽.非视距环境下基于RSS-TOA的定位算法[J].电信科学,2019,35(9):107-113. |
| |
| 作者姓名： | 卢志刚 李有明 贾向红 常生明 王晓丽 |
| |
| 作者单位： | 宁波大学信息科学与工程学院,浙江宁波,315211;中国联合网络通信有限公司,北京,100033 |
| |
| 基金项目： | 国家自然科学基金资助项目(61571250);浙江省自然科学基金资助项目(LY18F010010);宁波市自然科学基金资助项目(2015A610121) |
| |
| 摘 要： | 在无线传感器网络定位系统中，尤其是在室内定位中，非视距（NLOS）误差的存在使定位性能急剧下降。为克服非视距传播带来的定位误差，提出了一种针对非视距环境下联合接收信号强度（RSS）和到达时间（TOA）的定位算法。该方法首先通过 RSS和 TOA的测量结果建立关于目标位置的非凸优化问题，然后通过二阶锥松弛理论，将原始的非凸优化问题转换为一种凸优化问题，由此能够快速得到原问题的一个次优解。通过计算机模拟仿真验证，新方法的估计精度更高，性能更好。
|
| 关 键 词： | 接收信号强度 到达时间 二阶锥松弛 非视距 |
RSS-TOA based localization algorithm in non-line-of-sight environment |
| |
| Zhigang LU,·ouming LI,Xianghong JIA,Shengming CHANG,Xiaoli WANG.RSS-TOA based localization algorithm in non-line-of-sight environment[J].Telecommunications Science,2019,35(9):107-113. |
| |
| Authors: | Zhigang LU ·ouming LI Xianghong JIA Shengming CHANG Xiaoli WANG |
| |
| Affiliation: | 1. Faculty of Electrical Engineering and Computer Science ,Ningbo University,Ningbo 315211,China;2. China United Network Communications Co.,Ltd.,Beijing 100033,China |
| |
| Abstract: | The existence of non-line-of-sight (NLOS) error can degrade the positioning performance in wireless sensor network localization system,especially in indoor localization.To overcome the localization error caused by NLOS propagation,a localization algorithm was proposed based on received signal strength (RSS) and time-of-arrival (TOA).Firstly,a non-convex optimization problem was established based on RSS and TOA.Then,the original non-convex optimization problem was transformed into a convex optimization problem through the second-order cone relaxation technique,therefore a sub-optimal solution to the original problem could be obtained efficiently.Finally,computer simulation results show that the proposed method can provide higher estimation accuracy and better performance. |
| |
| Keywords: | received signal strength time-of-arrival second-order cone relaxation non-line-of-sight |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《电信科学》浏览原始摘要信息 |
|
点击此处可从《电信科学》下载全文 |
|
