Slope Superficial Displacement Monitoring by Small Baseline SAR Interferometry Using Data from L-band ALOS PALSAR and X-band TerraSAR: A Case Study of Hong Kong, China
作者： Fulong Chen , Hui Lin , Xianzhi Hu
DOI: 10.3390/RS6021564
关键词:
摘要: Owing to the development of spaceborne synthetic aperture radar (SAR) platforms, and in particular increase availability multi-source (multi-band multi-resolution) data, it is now feasible design a surface displacement monitoring application using multi-temporal SAR interferometry (MT-InSAR). Landslides have high socio-economic impacts many countries because potential geo-hazards heavy casualties. In this study, taking into account merits ALOS PALSAR (L-band, good coherence preservation) TerraSAR (X-band, resolution short revisit times) we applied an improved small baseline InSAR (SB-InSAR) with 3-D phase unwrapping approach, monitor slope superficial Hong Kong, China, mountainous subtropical zone city influenced by over-urbanization monsoonal rains. Results revealed that synergistic use data produces different outcomes relation reliability spatial-temporal resolution, hence could be significant value for comprehensive understanding unstable slopes.
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