.c.Matera, Italy

S. Vetrella
University of Naples

 Despite the considerable number of variables that contribute
to SIR-C/X-SAR image formation, the data can reveal system
descriptors by studying the system response to known point
or extended targets within the scene.  Even if restricted
to SAR application on land, it can be stated that the only
effective calibration is one performed at the total system
level, e.g. from input scene to output image or from input
spectra to output spectra.  The ultimate justification of
this study is to prove the effectiveness of calibration to
provide the end-users with consistent data-sets.
 This test site in southern Italy, near Matera, was chosen
because it offers several advantages.  A new National Research
Council Institute, devoted to space activities and connected
to the National Space Plan, has been completed in this area.
 In December 1987, SAR processing activities started in this
research center where a Laser Ranging Station has been fully
operative since 1985.  Further advantages are:  1) the existence
of detailed and current topographic surveys for the area;
2) the proximity of powerful computing facilities; 3) the
foreseen SAR Processing Facilities that could process SIR-C/X-SAR
raw data; 4) public and private institutions in the area
conducting environmental and agricultural studies; and 5)
the morphological and land cover characteristics of the area.