Abstract
With the increasing demand for indoor services based on location information, the importance of achieving accurate indoor positioning has become increasingly prominent. However, wireless sensor networks (WSNs) are impacted by non-line-of-sight (NLOS) transmissions when transmitting signals, resulting in decreased positioning accuracy. In contrast, The Inertial Navigation System (INS) operates independently without relying on external data, its positioning results are not affected by NLOS transmission, but it has the problem of error accumulation caused by integration. A joint positioning method combining INS and Ultra-wide band (UWB) is advanced to decrease the influence of NLOS error. When locating target nodes in UWB, an improved fuzzy clustering algorithm is employed to minimize the influence of NLOS transmission. Finally, the Multi-Filter Fusion method is used to fuse the positioning results of INS and UWB to obtain high-precision and robust position information. Simulation and experimental results show that the proposed algorithm owns better performance compared with existing algorithms.
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Funding
This work was supported by the National Natural Science Foundation of China under Grant No. 62273083 and No.61803077; Natural Science Foundation of Hebei Province under Grant No. F2020501012.
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The authors confirm contribution to the paper as follows: guidance and oversight throughout the project: Long Cheng; provide critical feedback on the manuscript: Chen Cui; study conception and design: Long Cheng and Chen Cui; data collection: Chen Cui and Zhijian Zhao; analysis and interpretation of results: Chen Cui; experimental design and perform data analysis: Chen Cui, Zhijian Zhao and Yuanyuan Shi;draft manuscript preparation: Long Cheng and Chen Cui; All authors reviewed the results and approved the final version of the manuscript.
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Communicated by: H. Babaie
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Cheng, L., Cui, C., Zhao, Z. et al. An improved multi-filter fusion indoor localization algorithm based on INS and UWB. Earth Sci Inform (2024). https://doi.org/10.1007/s12145-024-01288-5
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DOI: https://doi.org/10.1007/s12145-024-01288-5