L1A Products

Their processing is aimed at generating Single-look Complex Slant (SCS) products. The SCS product, obtained after the L1A processing, contains focused data in complex format, in slant range and zero Doppler projection. The processing performed on L0 input data are:

  • gain receiver compensation
  • internal calibration
  • data focusing
  • statistics estimation of the output data
  • data formatting into output

L1B Products

Their processing is aimed at generating Detected Ground Multilook (MDG) products, starting from input (L1A) data. An MDG product, obtained after L1B processing, contains focused data, detected, radiometrically equalized and in ground range/azimuth projection. The processing performed on L1A input data are:

  • multi-looking for speckle reduction
  • image detection (amplitude)
  • ellipsoid ground projection
  • statistics evaluation
  • data formatting

L1C Products

Their processing is aimed at generating Geocoded Ellipsoid Corrected (GEC) products. A GEC product, obtained after L1C processing, contains focused data, detected geo-located on the reference ellipsoid and represented in a uniform pre-selected cartographic presentation. The processing performed on L1B input data are:

  • multi-looking for speckle reduction
  • ellipsoid map projection
  • statistics evaluation
  • data formatting

L1D Products

Their processing is aimed at generating Geocoded Terrain Corrected (GTC) products. A GTC product, obtained after L1D processing, contains focused data projected onto a reference elevation surface in a regular grid obtained from a cartographic reference system. The image scene is located and accurately (x, y, z) rectified onto a map projection, through the use of Ground Control Points (GCPs) and Digital Elevation Model (DEM). The processing performed on L1B input data is actually GEC processing with the use of the DEM for map projection.