Journal of Guangdong University of Technology ›› 2015, Vol. 32 ›› Issue (3): 123-126.doi: 10.3969/j.issn.1007-7162.2015.03.023

• Comprehensive Studies • Previous Articles     Next Articles

Improving the Coherence of Interferograms of Mining Subsidence by Oversampling

Wu Hai-xiang1, Wang Hua1, Huang Xiu-ru1, Carolina Pagli2, Yang Ze-xin1   

  1. 1.School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China; 2.Department of Earth Science, University of Pisa, Pisa 56126, Italy
  • Received:2014-04-11 Online:2015-09-22 Published:2015-09-22
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Abstract: The authors use oversampling method to improve the coherence of SAR images, which makes the fringes of the studied area clearer. By using this method, the authors process 6 pairs of interferograms and derive the time series of mining subsidence. The results show that some mines in Tangshan have been subsiding rapidly from November 2004 to April 2005 with the maximum rate of 2 398 mm/yr.

Key words: InSAR, mining subsidence, oversampling, coherence, Tangshan

CLC Number: 

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