摘要
在工业场景中,复杂无线环境对定位网络的影响导致定位存在实时可靠性差、精度低的问题.基于此,本文设计了在信标节点异步情况下支持TDOA(Time Difference-Of-Arrival)测量的确定性定位网络模型(ASync-DetNET),同时提出了适用于ASync-DetNET的节点感知模型和定位模型.通过简化了定位节点对数据信息的获取方式,合理调度通信资源,使得能够满足不同精度的定位需求,在保障定位精度的前提下,提高定位的实时可靠性.本文在实际搭建的面向复杂工业环境的UWB(Ultra-WideBand)室内定位系统中进行测试,结果表明文中方法能够在一定程度上提高了定位精度,保证定位的确定性.
In the industrial environment,the influence of the complex wireless communication on the localization network leads to poor real-time reliability and low accuracy of localization.This paper proposes the deterministic localization network model for TDOA(time difference-of-arrival) measurement in the case of asynchronous anchor nodes called ASync-DetNET.After that,we propose the sensing model and localization model,which can adapt to ASync-DetNET.These models can simplify the way of obtaining data information,comply with various requirements of localization accuracy and guarantee the real-time reliability with reasonably communication resources scheduling.Subsequently,we implement a localization system with ultra-wideband signals for complicated environment and finally we estimate the influence of the ASync-DetNET on the localization.The experiments show that the proposed models can improve the accuracy of localization and guarantee the deterministic of localization.
作者
薛塬
苏伟
王洪超
杨冬
XUE Yuan;SU Wei;WANG Hong-chao;YANG Dong(School of Electmnic and Information Engineering,Beijing Jiaotong University,Beijing 100044 ,China)
出处
《电子学报》
EI
CAS
CSCD
北大核心
2019年第10期2017-2024,共8页
Acta Electronica Sinica
基金
中央高校基本科研业务费专项资金(No.2018YJS308)
国家自然科学基金(No.61701018)
关键词
工业
室内定位
确定性网络
实时性
可靠性
industrial
indoor localization
deterministic network
real-time
reliability
