Remote Sens. 2014, 6(2), 1564-1586; doi:10.3390/rs6021564
Article

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

1,2,* email, 3,4email and 3email
Received: 12 December 2013; in revised form: 27 January 2014 / Accepted: 10 February 2014 / Published: 20 February 2014
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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.
Keywords: slope superficial displacement; small baseline SAR interferometry; PALSAR; TerraSAR; Hong Kong
PDF Full-text Download PDF Full-Text [2189 KB, uploaded 19 June 2014 02:03 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Chen, F.; Lin, H.; Hu, X. 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. Remote Sens. 2014, 6, 1564-1586.

AMA Style

Chen F, Lin H, Hu X. 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. Remote Sensing. 2014; 6(2):1564-1586.

Chicago/Turabian Style

Chen, Fulong; Lin, Hui; Hu, Xianzhi. 2014. "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." Remote Sens. 6, no. 2: 1564-1586.


Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert