A wireless ranging system including six base stations and two observation stations was employed to monitor the surface displacement of an artificial landslide occurring in Nanjing Tangshan Town, southeast China, which was simulated by mechanical mining on a hill of artificial accumulation. The range data collected by both base stations and observation stations was devoted to construct observation. Moreover, the nonlinear least squares estimation method was used to obtain the displacement on account of nonlinearity in observation equation. Meanwhile, the DOP values derived from design matrix of observation equation was used to evaluate the spatial configuration of the base stations. The results from the wireless ranging system show that the occurrence of the artificial landslide was detected, and the trajectory of the landslide was showed through continuous observation. These findings demonstrate that the experimental design, wireless ranging system, as well as the displacement estimation algorithm can provide effective means to monitor and evaluate the status of landslides and unstable slope effectively in engineering applications.
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This work was carried out with support of National Natural Science Foundation of China (Grant No.41604024), China Postdoctoral Science Foundation (Grant No.2016 M601815), and State Key Laboratory of Geo-information Engineering (SKLGIE2016-Z-1-3).
Conflict of interest
The authors declare that they have no conflict of interest.
Responsible Editor: Biswajeet Pradhan
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Zhang, Q., Chen, Z. Artificial landslides monitoring based on wireless ranging using a nonlinear least squares estimation. Arab J Geosci 13, 485 (2020). https://doi.org/10.1007/s12517-020-05534-0
- Wireless ranging
- Artificial landslide
- Nonlinear least square