The atmospheric disturbance correction model in slope deformation monitoring using IBIS-L system

Springer Science and Business Media LLC - Tập 19 - Trang 2157-2167 - 2016
Xiaoqing Zuo1, Hongchu Yu1, Chenbo Zi2, Xiaokun Xu2
1Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming, China
2Huaneng Lancang River Hydropower Co., Ltd, Kunming, China

Tóm tắt

Ground-based radar interferometry, an innovative technology for surface deformation monitoring has the advantages of high-security, high-resolution, adapting to all kinds of weather conditions and so on. Ground-based radar interferometry using microwave signal as transmission signal, is susceptible to atmospheric disturbance. How to eliminate the atmospheric disturbance influence is the key to achieve high-precision monitoring. Accordingly, this article aims at developing an effective atmospheric disturbance correction model. Firstly, IBIS- L system and corner reflectors as the stable points were placed. Secondly, microwave refractive index was calculated through the atmospheric parameters. Furthermore, according to the additional displacement acquired by IBIS-L system, the radial distance, azimuth distance of corner reflectors, and microwave refractive index, the atmospheric disturbance correction model in using IBIS-L system for slope monitoring was established. Finally, the additional displacement calculated from the model is in comparison with additional displacement by IBIS-L system monitoring. Experiments show that, the model can effectively eliminate the influence of atmospheric disturbance, and ensure monitoring accuracy.

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Springer Science and Business Media LLC

Tập 19

2157-2167

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