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Solid Earth An interactive open-access journal of the European Geosciences Union

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© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
17 Sep 2014
Review status
This discussion paper is a preprint. A revision of the manuscript for further review has not been submitted.
An improved approach to estimate large-gradient deformation using high resolution TerraSAR-X data
D. Liu1, R. Chen2, B. Riedel1, and W. Niemeier1 1Institute of Geodesy and Photogrammetry, Braunschweig, Germany
2Institute of Electronics, Chinese Academy of Sciences, Beijing, China
Abstract. Interferometric Synthetic Aperture Radar (InSAR) has shown unique capabilities in numerous applications for deformation monitoring. However, InSAR will lose effectiveness with large-gradient deformation due to the limitation of maximum detectable phase gradient and the phase unwrapping step of InSAR. Coalfield is the exact object providing such challenges for InSAR technique. Strong mining activities often induces large scale non-linear deformation with large gradient. This paper integrates offset tracking technique based on Corner Reflector (CR) and InSAR to overcome relevant problems. By applying offset tracking to high resolution TerraSAR-X intensity images, the coarse estimation of large deformation was obtained and extracted, allowing the following InSAR processing to carry out phase unwrapping correctly. Finally, the fine estimation of deformation was done by the Persistent Scatterer InSAR (PSI) technique. The detected deformation time series indicated good root-mean-square errors (RMSE), validated by GPS in situ investigation. All InSAR data were processed in the open source software StaMPS and one in-house InSAR package.

Citation: Liu, D., Chen, R., Riedel, B., and Niemeier, W.: An improved approach to estimate large-gradient deformation using high resolution TerraSAR-X data, Solid Earth Discuss.,, in review, 2014.
D. Liu et al.
Interactive discussionStatus: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
RC C1085: 'Review of the manuscript se-2014-78', Anonymous Referee #1, 06 Oct 2014 Printer-friendly Version 
AC C1295: 'Reply to referee', Donglie Liu, 19 Nov 2014 Printer-friendly Version 
RC C1626: 'Reviewer Report', Anonymous Referee #2, 03 Mar 2015 Printer-friendly Version 
D. Liu et al.
D. Liu et al.


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