GRD - Granada

Start: 01 January 2014
End: 31 December 2014
Funding: National
Status: Due
Division: Geomatics
Department: Remote Sensing (RSE)

The GRD project is focused on ground movements related to landslides and other ground instability phenomena occurring in the Sierra Nevada area. It involves two types of activities:

A) Differential SAR interferometry (DInSAR): processing and analysis of single differential interferograms. This includes:

  •  The acquisition of SAR images from the sensors ALOS Palsar and ASAR Envisat.
  •  The SAR image preprocessing and the differential interferogram computation.
  •  The joint analysis of the interferograms, which involves the CTTC staff and the experts of the University of Granada.

B) Advanced DInSAR: Persistent Scatterer Interferometry (PSI). This includes

  •  The design of a redundant network of interferograms.
  •  The pixel selection.
  •  The estimation of the deformation velocity maps
  •  The estimation of the deformation time series.
  •  The joint analysis of the results interferograms, which involves the CTTC staff and the experts of the University of Granada.

 

Figure 1 illustrates an example of deformation velocity map superposed to an orthoimage.

Figure 2 shows a zoom of an interpreted deformation velocity map.