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

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Hu,  J.
1.4 Remote Sensing, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Guo,  Jiming
External Organizations;

Xu,  Yi
External Organizations;

Zhou,  Lv
External Organizations;

Zhang,  Shuai
External Organizations;

Fan,  Kunfei
External Organizations;

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5000475.pdf
(Verlagsversion), 7MB

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Zitation

Hu, J., Guo, J., Xu, Y., Zhou, L., Zhang, S., Fan, K. (2019): Differential Ground-Based Radar Interferometry for Slope and Civil Structures Monitoring: Two Case Studies of Landslide and Bridge. - Remote Sensing, 11, 24, 2887.
https://doi.org/10.3390/rs11242887


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5000475
Zusammenfassung
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.