Abstract
In order to solve the problem of radionuclide pollution in uranium tailings reservoir, a new wireless sensor network technology is used to monitor uranium tailings reservoir on-line in real-time. Therefore, a convex positioning algorithm based on the time difference of arrival (TDOA) is proposed to meet the uranium tailings reservoir’s monitoring requirements. First of all, the distance between the unknown node and each anchor node in the communication range is obtained by using the TDOA ranging method. Through many comparisons and screening times, three anchor nodes that are relatively far away from the unknown node are selected. Then the convex location algorithm is used to reduce the region of the unknown nodes. Then the estimated coordinates of the unknown nodes are obtained. Compared with the original convex algorithm, the results show that the proposed algorithm’s positioning accuracy is 27% higher than that of the convex algorithm. The fluctuation range of positioning error is reduced by 26%, which can effectively meet the uranium tailings reservoir’s monitoring needs.
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Acknowledgements
This work was in part supported by the National Natural Science Foundation of China (No.11875164); Key Research and Development Projects of Hunan Province (2018SK2055).
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YU, Xw., HUANG, Lp., LIU, Y. et al. Convex Localization Algorithm based on Time Difference of Arrival for WSN in Uranium Tailings Radioactive Contamination. Wireless Pers Commun 118, 999–1015 (2021). https://doi.org/10.1007/s11277-020-08055-x
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DOI: https://doi.org/10.1007/s11277-020-08055-x