1. Comparison of different atmospheric phase screen correction models in ground-based radar interferometry for landslide and open-pit mine monitoring.
- Author
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Li, Bingquan, Jiang, Wenliang, Li, Yongsheng, Luo, Yi, Jiao, Qisong, Wang, Xin, and Zhang, Jingfa
- Subjects
RADAR interferometry ,STRIP mining ,LANDSLIDES ,ATMOSPHERIC models ,RADAR - Abstract
Although the atmospheric compensation models developed to date have been generally robust and effective for InSAR, how to choose the right atmospheric correction method for ground-based InSAR is worth studying. This paper uses different methods for atmospheric phase screen (APS) compensation based on studies of ground-based radar (GBR) to zero-baseline acquisitions over the Woda landslide in Sichuan, China. This landslide has a steep topography, thick fog, turbulent rivers and strong rains. Data were acquired at the Ku-band using a GAMMA Portable Radar Interferometer II (GPRI-II) in multiple campaigns (4 July 2019–13 July 2019). In 2019, the Miyun open-pit mine was also studied; the maximum deformation reached 4.03 mm/hour. The collected data were processed within one unit based on the small baseline set (SBAS) approach. The experimental results show the following (1) For long-distance monitoring with complex atmospheric disturbances, range- and/or height-dependent models fail. (2) The iterative decomposition (ITD) method can effectively address complex atmospheric disturbances. (3) If the threshold of wavelength is set to be large, the ITD method becomes a stratified model. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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