摘要
超宽带UWB定位技术在受到电磁干扰、NLOS等情况影响时,实际定位环境变得复杂,造成实际定位精度不高、定位稳定性差。通过借鉴差分GPS技术,以TDOA-UWB室内定位技术为基础,提出差分UWB定位算法。同时结合权重滑动平均法,研究并提出基于TDOA算法的差分UWB室内定位系统,以Hainan EVK 2.0系统作为实验平台进行相关的测试实验。实验结果表明,基于TDOA算法的差分UWB室内定位系统能有效提高定位精度和定位稳定性,在受到外界干扰的情况下,定位误差整体降低23%。
When ultra-wideband(UWB)positioning technology is affected by electromagnetic interference,NLOS and other conditions,the positioning environment becomes complicated,which results in low actual positioning accuracy and poor positioning stability. On the basis of the TDOA-UWB indoor positioning technology,a differential UWB positioning algorithm is proposed by drawing on the experience of differential GPS(DGPS)technology. Combined with the weight moving average method,a differential UWB indoor positioning system based on TDOA algorithm is studied and proposed. With the Hainan EVK 2.0 system as the experimental platform,relational testing experiments were carried out. The experimental results show that the differential UWB indoor positioning system based on TDOA algorithm can effectively improve the positioning accuracy and positioning stability,and the positioning errors are wholly reduced by 23% in the case of external interference.
出处
《现代电子技术》
北大核心
2018年第6期45-49,共5页
Modern Electronics Technique
基金
国家自然科学基金项目(61461017)
海南省重点研发计划项目(ZDYF2016002)
海南省自然科学基金创新团队项目(2017CXTD0004)
海南省研究生创新科研课题(Hyb2017-07)~~
