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Qinghai-Tibet Plateau (QTP) is often affected by climate change and anthropogenic activity. In this study, permafrost surface deformation is detected by time series InSAR method using high resolution TerraSAR-X images. In particularly, a sinusoidal function model is adopted in the parameter retrieving step for seasonal deformation extraction. The backscattering (σ°) of the main ground target types,...
In order to monitor the ground deformation due to coal mining, a new time-series InSAR technique combining PSs and DSs is presented in this paper. Firstly DSs are efficiently identified using classified information and statistical characteristics. Then a two-scale network is introduced into traditional PSI to deal with PSs and DSs. The proposed method is performed to investigate the subsidence of...
This paper presents a multiimage DInSAR approach to obtain ground movement using the quasi coherent targets (Q-CTs), such as the bare land and light cultivated areas that distribute widely on the suburban ground surface. The method adopts a new processing strategy for targets selection based on the classification information and coherence properties of the ground objects. Furthermore, the linked coherence...
This study presents a dynamic deformation retrieval method for differential synthetic aperture radar interferometry (DInSAR) processing. Detailed nonlinear displacement parameters are modeled and estimated for capturing the developing trends of ground movement both in time and space. In order to reduce the system disturbance errors such as atmospheres and platform deviations, the singular value decomposition...
Recent years, the application of multi-baseline DInSAR was primarily possible in the case of slow ground movements. In this paper, the application of Beijing-Tianjin intercity railway roadbed deformation monitoring based on multi-baselines DInSAR is present. To enable this, the advanced network algorithm is adapted for pixels linking. Our study is based on 15 ALOS PALSAR images during one-year period...
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