MAGNIfying COherent Scatterers

MAGNICOS Tool's Description

During the project, the problem of oversampling and registering SAR data has been the core of the WP1 works.

Indeed, SAR data are provided in SLC complex format (each pixel is described by a real part and an imaginary part) so that any oversampling of complex format differs strongly from the same oversampling based on amplitude data. Report D1.9 is devoted to an original approcach of such oversampling based on phase vortex (as in turbulent media).

The registering of present THR data (as Cosmo Skymed and Terrasar-X) can be nowadays based on a very good knowledge of the sensor position (described by "state vectors" in the metadata provided either in TSX xml files or inside the CSK hdf5 file). By this way, it possible to register with a good precision (better than a pixel) a stack of data. Then a fine coregistration based on coherence peak (obtained on stable areas) can be computed so that the final stack is coregistered with a very good precision (<0.3 pixel). By this way, amplitude analysis or coherent analysis can be investigated. This novative approach corresponds to specific registering algorithms and is detailed in the final report on Magnicos tools.

Finally, Magnicos tools (base on xima efidir tools) provide a graphical environment so that a stack of registered files can be analysed to understand pixel characteristics (at nominal resolution and after oversampling, as well for amplitude analysis as phase analysis) and to find the possible PS on image.

MAGNICOS  V4 final version

The final version of Magnicos is included in the Efidir-tools distribution. It requires the installation of Xima (software dedicated to the visualisation of SAR Images) and XView (requiring X11R6 library).

Beta test versions are available below.

V1 Magnicos and image example

V3 Magnicos