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Open AccessArticle

Differential Ground-Based Radar Interferometry for Slope and Civil Structures Monitoring: Two Case Studies of Landslide and Bridge

by Jiyuan Hu 1,2,3, Jiming Guo 1,*, Yi Xu 1, Lv Zhou 1, Shuai Zhang 1 and Kunfei Fan 4
School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, 14473 Potsdam, Germany
Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin University of Technology, Guilin 541004, China
Nanning Natural Resources Information Center, Nanning 530022, China
Author to whom correspondence should be addressed.
Remote Sens. 2019, 11(24), 2887;
Received: 17 October 2019 / Revised: 26 November 2019 / Accepted: 2 December 2019 / Published: 4 December 2019
Ground-based radar interferometry, which can be specifically classified as ground-based synthetic aperture radar (GB-SAR) and ground-based real aperture radar (GB-RAR), was applied to monitor the Liusha Peninsula landslide and Baishazhou Yangtze River Bridge. The GB-SAR technique enabled us to obtain the daily displacement evolution of the landslide, with a maximum cumulative displacement of 20 mm in the 13-day observation period. The virtual reality-based panoramic technology (VRP) was introduced to illustrate the displacement evolutions intuitively and facilitate the following web-based panoramic image browsing. We applied GB-RAR to extract the operational modes of the large bridge and compared them with the global positioning system (GPS) measurement. Through full-scale test and time-frequency result analysis from two totally different monitoring methods, this paper emphasized the 3-D display potentiality by combining the GB-SAR results with VRP, and focused on the detection of multi-order resonance frequencies, as well as the configure improvement of ground-based radars in bridge health monitoring. View Full-Text
Keywords: GB-SAR; GB-RAR; VRP; displacement evolution; operational modes GB-SAR; GB-RAR; VRP; displacement evolution; operational modes
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Hu, J.; Guo, J.; Xu, Y.; Zhou, L.; Zhang, S.; Fan, K. Differential Ground-Based Radar Interferometry for Slope and Civil Structures Monitoring: Two Case Studies of Landslide and Bridge. Remote Sens. 2019, 11, 2887.

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