Abstract
The triggering threshold is one of the most important methods for early warning of landslide disasters. And the traditional method is to conduct a simple comparative analysis of the data collected at each monitoring point, which cannot take full advantage of the information provided by the data. In order to overcome this setback and improve the accuracy of the early warning, rainfall detector, global navigation satellite system and deep displacement sensor are used to detect external factors and internal states that cause landslides. Then, on this basis, a new data fusion technology based on the generalized evidence theory is proposed in this paper. Firstly, the system collects information from different sensors and transmits them to the landslide probability. Considering that the landslide is a gradual process, a new method is used to convert the landslide probability into the basic probability assignment for intuitionistic fuzzy sets. Then, the fuzzy divergence measure is used to calculate the uncertainly of evidence, which expresses the relative importance of the evidence. Next, the ultimate weight of each sensor is applied to adjust the mass function and gain the reliability. Finally, the system makes a final decision according to fusion results based on the generalized evidence theory. Three types of multi-sensors data were used to test the performance of the proposed algorithm. Comparing with other four fusion method, the proposed method has a better performance, which can increase the basic probability assignments from 0.73 to 0.92. Moreover, the proposed model achieved when dealing data with high degree of conflict. The simulation results showed that the proposed method could reduce the uncertainly and get a more comprehensive and integrated decision for the early landslide warning system.
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Acknowledgements
The work is partially supported by the innovation foundation for Doctor Dissertation of Quanzhou Normal University (H19026), science and technology project of Quanzhou (2018Z031, 2019N115S) and Natural Science Foundation of Fujian Province (2019J01736).
Funding
Natural Science Foundation of Fujian Province, 2019J01736, Musheng Chen, science and technology project of Quanzhou, 2018Z031, Musheng Chen, 2019N115S, Yongxi Zeng.
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Chen, M., Cai, Z., Zeng, Y. et al. Multi-sensor data fusion technology for the early landslide warning system. J Ambient Intell Human Comput 14, 11165–11172 (2023). https://doi.org/10.1007/s12652-022-04396-6
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DOI: https://doi.org/10.1007/s12652-022-04396-6