Resolving 3-D Mining Displacements From Multi-Track InSAR by Incorporating With a Prior Model: The Dynamic Changes and Adaptive Estimation of the Model Parameters
- 12 July 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Geoscience and Remote Sensing
- Vol. 60 (01962892), 1-10
- https://doi.org/10.1109/tgrs.2021.3093058
Abstract
It is a common method to resolve three-dimensional (3-D) deformation components associated with underground mining by incorporating Single-track interferometric synthetic aperture radar (InSAR) with a prior deformation model termed linear proportion model (LPM) (hereinafter referred to as Sin-LPM). Nevertheless, the Sin-LPM method relies on three model parameters that are needed to be in situ collected, and it neglects their dynamic changes during the period of underground extraction, narrowing the practical applications of the Sin-LPM method, and degrading the accuracy of the estimated 3-D displacements. In this article we propose a new method to resolve 3-D mining displacements from multi-track InSAR observations by incorporating with the LPM. In which, the model parameters are first considered as dynamic and further adaptively estimated from the multi-track InSAR observations using a robust solver. Following that, 3-D mining displacements are resolved from the multi-track InSAR using the conjugate gradient method (CGM). The proposed method was tested in Datong coalfield, China. The results suggest that the proposed method can well estimate 3-D mining displacements with a mean error of about 1.8 cm. Compared with the previous Sin-LPM, the proposed method can effectively improve the accuracy of the estimated 3-D displacements (e.g., 69% in this study), and can work well even over a large area where the model parameters are unknown. The proposed method offers a new insight to improve the InSAR-based retrieval of 3-D displacements induced by other anthropologic or geophysical activities.Keywords
Funding Information
- National Natural Science Foundation of China (41904005)
- National Science Fund for Distinguished Young Scholars (41925016)
- Natural Science Foundation of Hunan Province, China (2020JJ4699)
- Research Foundation of Education Bureau of Hunan Province, China (20K134)
- National Key Research and Development Program of China (2018YFC1503600)
- Project of Innovation-driven Plan of Central South University (2019CX007)
This publication has 30 references indexed in Scilit:
- Time series analysis of InSAR data: Methods and trendsISPRS Journal of Photogrammetry and Remote Sensing, 2016
- Assessments of land subsidence in the Gippsland Basin of Australia using ALOS PALSAR dataRemote Sensing of Environment, 2015
- Retrieving three-dimensional displacement fields of mining areas from a single InSAR pairJournal of Geodesy, 2014
- TanDEM-X: The New Global DEM Takes ShapeIEEE Geoscience and Remote Sensing Magazine, 2014
- Modeling minimum and maximum detectable deformation gradients of interferometric SAR measurementsInternational Journal of Applied Earth Observation and Geoinformation, 2011
- A new algorithm for surface deformation monitoring based on small baseline differential SAR interferogramsIEEE Transactions on Geoscience and Remote Sensing, 2002
- Seam dip angle based mining subsidence model and its applicationInternational Journal of Rock Mechanics and Mining Sciences, 2002
- The complete (3‐D) surface displacement field in the epicentral area of the 1999 MW7.1 Hector Mine Earthquake, California, from space geodetic observationsGeophysical Research Letters, 2001
- Decorrelation in interferometric radar echoesIEEE Transactions on Geoscience and Remote Sensing, 1992
- Robust regression using iteratively reweighted least-squaresCommunications in Statistics - Theory and Methods, 1977