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The all-weather, non-contact and high-accuracy deformation monitoring can be realized by using the GB-SAR system, which includes three key technologies such as Stepped Frequency Continuous Wave (SF-CW), synthetic aperture radar (SAR) and interferometry. In this paper, a deformation monitoring experiment made at Geheyan Dam is described. The effects on the monitoring data caused by atmospheric changes are analyzed, and the monitoring results are statistically analyzed. The results show that the deformation information of the entire dam surface can be reflected accurately with the monitoring data corrected by the environmental correction methods, and these corrected data can be used for analyzing the stability of the dam.
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Cheng et al. (2014) studied this question.
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