Remote Sensing Applications and Decision Support

Application of ground-based synthetic aperture radar technique for emergency monitoring of deep foundation excavation

[+] Author Affiliations
Xianglei Liu, Xi’an Zhao, Keliang Ding, Ling Zhu, Youqiang Dong

Beijing University of Civil Engineering and Architecture, School of Surveying and Mapping Engineering and Key Laboratory for Urban Geomatics of National Administration of Surveying, Mapping and Geoinformation, No. 1 Zhanlanguan Road, Beijing 100044, China

Jing Ma

Beijing Institute of Geo-enginnering and Exploration, No. 9 Beiwa Road, Beijing 100048, China

Xiaohua Tong

Tongji University, College of Surveying and Geo-informatics and Key Laboratory of Modern Engineering Surveying of State Bureau of Surveying and Mapping, No. 1239 Siping Road, Shanghai 200092, China

J. Appl. Remote Sens. 9(1), 096021 (Aug 18, 2015). doi:10.1117/1.JRS.9.096021
History: Received January 20, 2015; Accepted July 22, 2015
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Abstract.  This paper presents an example of using the ground-based synthetic aperture radar (GBSAR) technique for the emergency monitoring of a deep foundation excavation. The process includes a quality evaluation for the interferometric data acquired by the IBIS-L radar from Ingegneria Dei Sistemi S.p.A. Atmospheric effects were eliminated through calibration with ground control points (two triangular reflectors) to improve the measuring accuracy of the emergency monitoring. Accuracy of the data obtained was then compared at six check points between the GBSAR technique and a Leica total station TC2003 with prisms. The results indicate that the GBSAR technique is a suitable method of emergency displacement monitoring within a deep foundation excavation and has several significant advantages. These include a higher level of accuracy, near real-time monitoring intervals, and site-wide displacement maps obtained for each observation sampling interval.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Xianglei Liu ; Xi’an Zhao ; Keliang Ding ; Ling Zhu ; Jing Ma, et al.
"Application of ground-based synthetic aperture radar technique for emergency monitoring of deep foundation excavation", J. Appl. Remote Sens. 9(1), 096021 (Aug 18, 2015). ; http://dx.doi.org/10.1117/1.JRS.9.096021


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