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Radar Satellite

PCI Geomatics -

RADARSAT-2 was first officially supported in PCI Geomatica v 10.1.3, which is further refined in newer versions. It is recommended to use version 10.2 (or a newer version) for processing RADARSAT-2 dataset. Any software version prior to Geomatica 10.1.3 should not be used for RADARSAT-2 processing. In Geomatica 10.2 onwards, simply use product.xml file to open the data in Focus and OrthoEngine (it is supported directly in our Generic Database [GDB] technology).

From version 10.2 onwards, RADARSAT-2 data can be imported using following two methods:

  1. Simply use the product.xml file to open the data in Focus or OrthoEngine. It is supported directly in our Generic Database (GDB) so user do not need to import the data into a PIX file using the CDSAR import program. On pointing to product.xml file in OE or Focus, user will be automatically pointed to select sigma nought, beta or gamma nought callibration type. User can also select 'None' to not apply any kind of callibration to RSAT2 data.
  2. Use FIMPORT in EASI to import Radarsat2 data and apply the calibration. This method will create a PIX file that can be further processed in OE. The FILI parameter must be entered as follows:
  • fili="d:\RS2_SGF\product.xml:Calibration Type:Sigma Nought
  • fili="d:\RS2_SGF\product.xml:Calibration Type:Beta Nought
  • fili="d:\RS2_SGF\product.xml:Calibration Type:Gamma
  • fili="d:\RS2_SGF\product.xml for no calibration.
TerraSAR-X SSC data format support is available from Geomatica 10.2.1 onwards.
COS file format is directly supported under PCI Geomatica GDB technology. So an explicit import is not required while reading the data. User can point to RAW XML file using Open Image functionality.

Please note: TerraSAR-X data should be organized in a specific directory structure before reading in Geomatica.
OrthoEngine looks for files in certain directories:

  • Root Directory/
  • TSX-1.SAR.L1B/
  • TSX1_SAR__AAA_BBBB_CC_D_EEE_xxxxxxxxTxxxxxx_xxxxxxxxTxxxxxx/
  • TSX1_SAR__AAA_BBBB_CC_D_EEE_xxxxxxxxTxxxxxx_xxxxxxxxTxxxxxx.xml
In OrthoEngine When working with Radar Specific Model, the inclusion of ground control points (GCPs) is optional. Without any GCPs the model is calculated based on the satellites positional information. If required, addition of few GCPs will further refine the model and improve the accuracy. As long as a DEM is included in the project, the images can still be orthorectified without any GCPs.

In the current version, SARSIGM and SARBETA are only available for RSAT-2.
For any other kind of SAR data, user should convert the DN in you image to calibrated data (Beta Nought) using the formula:

Beta Nought = Ks * (DN)^2

where, Ks is the calibration factor provided in the annotation file of TSX-1.

The Radarsat-2 data package provides calibration files lutBeta.xml; lutGamma.xml and lutSigma.xml so we can apply these to the image, whereas TerraSar-X and Cosmo-SkyMED data do not provide these files.

TSX-1 data formats supported in Geomatica OrthoEngine are:

MGD - Level 1B

SSC - Level 1B

We do not support GEC and EEC data formats in OrthoEngine because they are already corrected by the data provider. However user can open any kind of TSX-1 data in Focus for viewing purpose.

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