TerraSAR-X Orthorectified Images

The Basic TerraSAR-X EEC product is orthorectified by applying readily available DEMs of the respective area. The quality of these DEMs may range from DTED Level 0 (usually from digital maps) up to DTED Level 2 (e.g. from the Shuttle Radar Topography Mission SRTM).

In an ORI^SAR, the geometric localization accuracy is enhanced by applying a more precise DEM (if obtainable or delivered by the client) as an essential input for an improved orthorectification process.

The product characteristics of a TerraSAR-X ORI^SAR are:

• Multilook detected
• WGS84 with standard projections UTM or UPS
• Choice of radiometric representation
  - Radar brightness (beta naught)
  - Radiometric calibration (sigma naught)
  - Radiometric normalisation (gamma naught)
• Information on local incidence angle, layover and shadow areas provided
• Application of different SAR filters (GAMMA MAP, Lee, etc)

For further details regarding TerraSAR-X data absolute calibration please download the document "Radiometric Calibration of TerraSAR-X Data: Beta Naught and Sigma Naught Coefficient Calculation".

For further details or consultations, please contact Infoterra's Customer Service Team via eMail or at +49 7545 8 4344.