What’s New in ENVI SARscape 5.2

The newest release of ENVI SARscape® – version 5.2 – introduces significant improvements over older versions. Key features among the new enhancements are:

• Sentinel-1 IW (TOPSAR) interferometry full support.
• Sentinel-1 data download.
• PALSAR-2 ScanSAR Full Aperture interferometry preliminary support.
• Improved parallel computing in interferometric processing.
• F-SAR support.
• Workflows can be saved and have a button to perform all the automatic steps with one click (Next >>>).
• New SARscape installer (also integrating silent mode).

Sentinel-1

• Full support for Sentinel TOPSAR and Stripmap interferometry and interferometric stacking, including very precise coregistration based on spectral diversity.
• Support for Intensity data in Sentinel-1 Extra Wide Swath.
• New Preferences Set "SENTINEL_TOPSAR" to be used for all processing related to Sentinel-1 acquisition in TOPSAR mode.
• Data-types of Sentinel-1 sensor are now automatically detected.
• Sample selection can be performed on Sentinel _slc_list files (_pwr file has to be used as reference).
• Import tools now contain a Sentinel Data download tool.
• Support of restituted and precise state vector products (RES and POE).

General

• One-click processing chain for Workflows (Next >>>) to execute all steps that do not require user interaction at once.
• "Save" and “Load” buttons in workflows to save and restore the actual workflow process status.
• Added Earth Gravitational Model EGM2008.
• Added support of SIRGAS 2000 Brazilian datum shift.
• New installer for Windows (unified 32/64bit and silent).
• Possibility to perform a silent installation of SARscape for systems without graphical interface.
• New IDL API to read and write SARscape’s .sml ancillary / header files from IDL scripts.
• New IDL example scripts (explained in the HELP).
• Several bug fixes and minor improvements.

Import

• Data-types of TSX sensor are now automatically detected.
• Import of F-SAR data (airborne).
• AIS marine traffic information can now be imported using SARscape.

General Tools

• Doppler Estimation tool in General Tools > Data and Quality Analysis.

Basic Module

• Second-generation De Grandi multi-temporal speckle filter.
• New De Grandi Filter with double polarization.
• Map to SAR tool now works with classification data. Please use "Last value = TRUE" option (in ENVI standard).

Interferometry Module

• Improved (faster) parallel computing in interferometric processing by means of TBB (Threading Building Blocks). Implicated steps are: Coregistration, Interferogram Generation, Coherence Estimation, Remove residual frequency (in particular in removing low pass components), Flattening, Filtering and Coregistration residual estimation using spectral diversity (for Sentinel TOPSAR).
• Improved (faster) MAI processing.
• Speed-up of Baseline Estimator (affecting, in particular, the SBAS connection graph) and baseline estimation for stereo pairs.
• Possibility to remove local residue fringes during the coherence estimation.
• Phase Editing is now available for the “Standard” interface. Both versions (Standard and Classic) work with ROIs instead of EWFs.

Interferometric Stacking Module

• PS Sub-Area Edit tool.
• New algorithm for merging blocks in PS processing based on SVD (Singular Value Decomposition).
• PS shape output can now be generated in slant geometry as well (under "other parameters" in the geocoding step using ENVI standard).
• Specific sub areas in PS stacking interferometry can be re-performed with a new tool (PS Compute Specific Sub-Area).

Interferometry ScanSAR Module

• PALSAR-2 ScanSAR interferometry is now possible using the ScanSAR interferometry module and Full Aperture ScanSAR products. This support is preliminary, since the module has only been tested only on a limited number of interferometric pairs.

Polarimetry and PolInSAR

• New Krogager polarimetric decomposition.