Railway subsidence monitoring by high resolution INSAR time series analysis in Tianjin

Author

Luo, Qingli ; Perissin, Daniele ; Lin, Hui ; Li, Qinghua ; Duering, Ralf

Author_Institution

ISEIS, Chinese Univ. of Hong Kong, Hong Kong, China

fYear

2011

fDate

24-26 June 2011

Firstpage

1

Lastpage

4

Abstract

Large-scale man-made linear features has played more and more important role in modern life and the development of urban are seriously affected by the subsidence of them. Permanent Scatterers (PS) technology was developed as a powerful tool for subsidence monitoring. High resolution of 1m data can be provided by TerraSAR X-band (TSX) with a short revisit period of 11 days. More detail and sensitive subsidence information can be expected to be detected by X-band. In this paper, we exploited the potential of TSX for railway subsidence monitoring. A case study was conducted in Tianjin. A total of 37 TSX images acquired from 2009/4/29 to 2010/11/11 were used in PS analysis. The average deformation map and geocoded Permanent Scatterer were generated by SARPROZ.

Keywords

computerised monitoring; geophysical image processing; microwave detectors; radar imaging; radar interferometry; radar resolution; railways; synthetic aperture radar; time series; SARPROZ; TSX image; TerraSAR X-band; geocoded permanent scattere; high resolution INSAR time series analysis; large scale man made linear feature; railway subsidence monitoring; sensitive subsidence information; Coherence; Decorrelation; Image color analysis; Monitoring; Rail transportation; Spatial resolution; Time series analysis; MST; TerraSAR; railway; subsidence monitoring;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoinformatics, 2011 19th International Conference on

Conference_Location

Shanghai

ISSN

2161-024X

Print_ISBN

978-1-61284-849-5

Type

conf

DOI

10.1109/GeoInformatics.2011.5980745

Filename

5980745