Paper Info
Title
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
Abstract
Owing to the development of spaceborne synthetic aperture radar (SAR) platforms, and in particular the increase in the availability of multi-source (multi-band and multi-resolution) data, it is now feasible to design a surface displacement monitoring application using multi-temporal SAR interferometry (MT-InSAR). Landslides have high socio-economic impacts in many countries because of potential geo-hazards and heavy casualties. In this study, taking into account the merits of ALOS PALSAR (L-band, good coherence preservation) and TerraSAR (X-band, high resolution and short revisit times) data, we applied an improved small baseline InSAR (SB-InSAR) with 3-D phase unwrapping approach, to monitor slope superficial displacement in Hong Kong, China, a mountainous subtropical zone city influenced by over-urbanization and heavy monsoonal rains. Results revealed that the synergistic use of PALSAR and TerraSAR data produces different outcomes in relation to data reliability and spatial-temporal resolution, and hence could be of significant value for a comprehensive understanding and monitoring of unstable slopes.
Year
DOI
Venue
2014
10.3390/rs6021564
REMOTE SENSING
Keywords
DocType
Volume
slope superficial displacement,small baseline SAR interferometry,PALSAR,TerraSAR,Hong Kong
Journal
6
Issue
ISSN
Citations 
2
2072-4292
4
PageRank 
References 
Authors
0.46
15
3
Name
Order
Citations
PageRank
Fulong Chen1277.17
Hui Lin245964.06
Xianzhi Hu340.80