期刊
SENSORS
卷 22, 期 16, 页码 -出版社
MDPI
DOI: 10.3390/s22165936
关键词
ultra-wideband (UWB); indoor positioning system (IPS); NLOS error; digital twin
资金
- National Natural Science Foundation Committee (NSFC) of China [52075404]
- Application Basic Frontier Special Project ofWuhan Science and Technology Bureau [2020010601012176]
This paper proposes an indoor positioning system using UWB technology and digital twin, which improves the positioning accuracy through perception-prediction feedback. In addition, an anchor layout method with virtuality-reality interaction and an error mitigation method based on neural networks are introduced in this system.
Ultra-wideband (UWB) technology is used for indoor positioning, but its positioning accuracy is usually degenerated by various obstacles in the indoor environment because of non-line-of-sight (NLOS). Facing the complex and changeable indoor environment, an indoor positioning system with UWB based on a digital twin is presented in this paper. The indoor positioning accuracy is improved with a perception-prediction feedback of cyber-physics space in this indoor positioning system. In addition, an anchor layout method with virtuality-reality interaction and an error mitigation method based on neural networks is put forward in this system. Finally, a case study is presented to validate this indoor positioning system with a significant improvement in positioning accuracy.
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