Modeling minimum and maximum detectable deformation gradients of interferometric SAR measurements

M. Jiang, Z. W. Li, Xiaoli Ding, J. J. Zhu, G. C. Feng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

36 Citations (Scopus)


A new functional model for determining the minimum and maximum detectable deformation gradients of interferometric synthetic aperture radar (InSAR) is developed. The model incorporates both the interferometric coherence and the look number, representing an extension to the existing models that consider only the interferometric coherence. Experimental results with Envisat ASAR data show that the new model performs well for interferograms with different look numbers and interferometric coherences. The model can serve as an important tool in determining whether InSAR technology can be used effectively to monitor a particular ground deformation. In addition, the model can also be used to determine the optimum look number for multi-looking operations to result in the best deformation monitoring results.
Original languageEnglish
Pages (from-to)766-777
Number of pages12
JournalInternational Journal of Applied Earth Observation and Geoinformation
Issue number5
Publication statusPublished - 1 Jan 2011


  • (insar)
  • Coherence
  • Detectable deformation gradient (DDG)
  • Interferometric synthetic aperture radar
  • Look number

ASJC Scopus subject areas

  • Global and Planetary Change
  • Earth-Surface Processes
  • Computers in Earth Sciences
  • Management, Monitoring, Policy and Law

Cite this