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Landslides monitoring with a squint angle based on gbsar
Shao, Zelong1,2; Zhang, Xiangkun1,2; Li, Yingsong1,3
Department微波遥感部
Source PublicationProgress In Electromagnetics Research M
2019
Volume80Pages:13-22
DOI10.2528/PIERM19012202
ISSN1937-8726
Language英语
AbstractGBSAR has been widely used in landslides monitoring for its high precision in deformation monitoring and portable characteristic in natural environments. When monitor slides in mountainous areas, GBSAR cannot only work in positive mode, and its antennas may be directed to the target with a large squint angle. Unfortunately, normal range doppler imaging algorithm is not used well in such applications. Thus, a correction method of RD algorithm for SAR imaging with a squint angle has been proposed in the paper. Because the monitoring target may be far away from the view center of the GBSAR, echo of the target may be side lobe resided, when it is received by the radar’s sensor. Simultaneously, distance between the sensor and imaging target changes with the azimuth time. Therefore, target in the SAR image would not be focused in one range bin if no range correction method was used. Thus, phase correction methods were used in the paper. The phase error was corrected in range domain and azimuth domain, respectively. It avoids 2D FFT processing. Thus, it may use few time and work. In this way, the GBSAR would have real time processing ability in the future. In the paper, a GBSAR was designed and used in slide monitoring applications in western mountains of Beijing. The experiment result shows that the system can measure target’s micro deformation in mm levels with a high precision. © 2019, Electromagnetics Academy. All Rights Reserved.
Indexed ByEI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7071
Collection微波遥感部
Affiliation1.Key Lab of Microwave Remote Sensing, National Space Science Center, Beijing; 100190, China;
2.School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China;
3.College of Information and Communications Engineering, Harbin Engineering University, Harbin; 150001, China
Recommended Citation
GB/T 7714
Shao, Zelong,Zhang, Xiangkun,Li, Yingsong. Landslides monitoring with a squint angle based on gbsar[J]. Progress In Electromagnetics Research M,2019,80:13-22.
APA Shao, Zelong,Zhang, Xiangkun,&Li, Yingsong.(2019).Landslides monitoring with a squint angle based on gbsar.Progress In Electromagnetics Research M,80,13-22.
MLA Shao, Zelong,et al."Landslides monitoring with a squint angle based on gbsar".Progress In Electromagnetics Research M 80(2019):13-22.
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