EV-InSAR V2.1.3 (Patch Release)
Release Date: July 11, 2003

Changes included in the July 11, 2003 patch for EV-InSAR (version 2.1.3)

   - A bug introduced in EV-InSAR v2.1.2 regarding the handling of the
     orbital state vectors in the case where they do no bracket the scene
     has been fixed.

   - A bug introduced in EV-InSAR v2.1.2 involving the grooming of the state 
     vectors has been fixed. The number of iterations required should now
     be as it was in versions previous to v2.1.2.

   - Intermediate georeferencing has been added to the images generated
     during phase unwrapping. This fixes some visualization issues that
     can occur with the phase unwrapping edit tool where the output images from
     phase unwrapping do not have georeferencing information.

   - When the ellipsoid for the external DEM is not specified, an error
     message is now displayed.

   - Fixed a bug where the InSAR GUI did not always properly save the 
     master-slave bias detection method when changed. 

   - Improvements to external DEM ingest to lower the amount of memory
     required when extracting large ROI.

   - Fixed a bug introduced in EV-InSAR v2.1.2 for residual topographic
     phase removal on a run that included an external DEM mask.

   - Improvements have been made so that the appropriate images are produced
     for a given processing step to allow the tools for that step to launch. 
     These changes affect DEM with external DEM processing mode only.

Changes included in the April 24, 2003 update of EV-InSAR (version 2.1.2)

   - The manual tiepoint marking tools have a new look and feel, and contain
     several improvements. The user is referred to the product documentation 
     for specific details.

   - "Ghost cursors" have been added to all linked images (in inspect windows 
     or tools) to simplify identification of common pixels between views.

   - Approximate georeferencing information has been added to most 
     intermediate images.

   - Specification of external imagery for 2-pass and 4-pass runs has been
     simplified. The external run is no longer specified for 4-pass runs,
     but rather the external DEM, and optionally the external Master SAR and 
     DEM mask images. These external images are no longer restricted to MFF2
     format and no longer need to be copied into the run. The user is referred
     to the product documentation for specific details. When external imagery 
     is specified, if the imagery was from an external run and the names have 
     been preserved, the other images are auto-detected.

   - The way phase to height conversion is modelled has been changed. This
     fixes a problem where artifacts in the modelling of topographic phase
     were noted in cases of very small baselines where B_Perp changed sign
     over the ROI. A bug was also corrected to slightly correct the residual 
     topographic phase removal process.

   - The Run Monitor Interface (RMI) has been modified to fix several problems 
     with messages either being reported multiple times or being lost. The 
     interface has been simplified to use a file for message exchange rather 
     than sockets. Error handling and logging of status messages has also been
     improved. It is worth noting that "rsh" is no longer required. The PXCPD 
     window has been removed, and log messages now appear in the shell window.

   - Dual CPU processing mode (for owners of the dual CPU version) now works
     under Windows XP, provided MPI is properly configured. Please refer to
     the software installation notes for further details.

   - Support has been added for left looking Radarsat datasets.

   - External DEMs in the polar stereographic projection may now be ingested.

   - Fixed a bug that occurred with external DEM ingest when a manual bias
     was specified. This only affects users of EV-InSAR v2.1.1.

   - A link to a "Frequently Asked Questions (FAQ)" page on the Atlantis web 
     site has been added to the Help menu in the main GUI.

   - Improved the conciseness and clarity of phase unwrapping messages. 

   - The external DEM scale factor option has been disabled (set to 1).

   - Added a warning dialog box for quitting the GUI while processing or 
     loading "already active" runs.

   - Errors and exceptions are now presented to the user inside a dialog 
     window and saved to the log file.

   - A history of the last five runs loaded by the InSAR GUI in now kept
     under the "File" drop down menu for quick reference.

   - In most cases, specifying only one CEOS file during input data 
     specification is now sufficient. For common CEOS naming conventions,
     the other files in the dataset and the system parameters will be 

   - The JDEM ingest tool has been moved to the main GUI (under Utilities).

   - The new OpenEV image format conversion tool has been added to the main 
     GUI (under Utilites).

   - A new orbit manager tool has been added to the main GUI (under Utilities) 
     to make the usage of the DELFT orbits easier.

   - Tutorial 5 has been changed to use a new dataset.

Changes included in the January 2, 2003 patch for EV-InSAR (version 2.1.1)

   - An issue where certain recipe files were sometimes corrupted when saving
     a run has been fixed.

   - Master and Slave SAR filenames are now automatically selected after
     entering a single file if the pattern matches one of the standard naming

   - The "New run" file selection dialog box has been simplified.

   - The default setting for "Scene Extraction" has been changed to "Process
     Overlapping Region".

   - The default height correction fit order has been changed to bilinear
     in the DEM Correct tool.

   - The enhanced interferogram and coherence images are now displayed in
     two linked views when using the "Inspect" button for the "Enhance
     interferogram phase" processing step.

   - Fixed an issue where zooming with two linked views in the tiepoint marking
     tools did not function correctly.

   - The external DEM and external DEM mask files are no longer restricted
     to a fixed directory within the run, and can now be placed outside the

   - Fixed an issue where the DEM height value was not correctly reported
     in the "Quality" report generated by the DEM Correct tool.

   - Fixed several issues where the interactive tools sometimes did not
     properly update the results after processing completed.

   - An issue with demo licenses expiring several days prematurely has been 

   - An issue where shared library import errors were occuring at run-time
     for Solaris users has been fixed. (Solaris Only)

Changes included in the June 28, 2002 update of EV-InSAR (version 2.1)

   - The ability to ingest ENVISAT data has been added, provided the software 
     is authorized for the ENVISAT module. Only one ENVISAT file for Master 
     and Slave can be ingested at one time. Data from Beam modes IS1 to IS7 
     is supported.

   - An issue where the phase would sometimes reverse after residual 
     topographic phase removal from the tool has been resolved. In 
     differential runs, this could cause the direction of a change feature to
     be incorrect.

   - A bug where the wrong change product was sometimes generated has been

   - An offset of PI, introduced into the enhanced interferogram has been
     fixed, so that the Interferogram and Enhanced Interferogram should have
     the same phase offset.

   - Residual phase removal on Radarsat scenes now works correctly.

   - The manual bias option for Coregistration Analysis has been fixed.

   - A display problem for some phase images has been fixed. Colours
     are now displayed properly.

   - Terrain correction and geocoding of the Enhanced Interfogram is
     now done using Sinc Interpolation. This fixes a problem where pixels
     near 0 or two PI in phase were not resampled correctly.

   - A problem that occasionally occurred when ingesting External DEMs in
     a UTM projection has been fixed.

   - Several accuracy improvements have been made to the generation and
     removal of topographic phase, the generation of change products, and
     the removal of residual phase.

   - Slant Range products are now available for run types where an External
     DEM is present and differential runs.

   - The Simulated SAR image is now properly generated for runs using ESRIN 
     CEOS formats as input.

   - Automatic bias detection is always done by default. When bias detection 
     fails, the run will try and continue, as if this option was not 

   - The sign of the change products now respect the respective times of the
     Master/Slave SAR images.

   - The IUGC75 ellipsoid has been added to the list of available ellipsoids.

   - User defined ellipsoids may now be specified from the GUI.

   - Several issues with the product generation GUI have been resolved. It
     is no longer necessary to specify the Extracted Master image.

   - The full scene ROI is now mapped properly in the presence of an External 
     DEM, boundary checking is done in all cases and the ROI trimmed so as to
     always contain valid data.

   - Azimuth spectral filtering has had several issues resolved.

   - Improvements to the usage of phase slope generation have been made.

Changes included in the December 17, 2001 update of EV-InSAR (version 2.0.2)

   - Several issues with CEOS ingest and auto-detect have been fixed.
     Missing parameters in the CEOS files are sometimes replaced by
     defaults to improve robustness. Warnings will be issued when
     parameters are replaced.

   - A DEM extraction tool has been added (currently supports only Japanese
     JDEM format)

   - Problems using UTM projections in the southern hemisphere
     have been corrected.

   - Ensured the generation of an image required by the residual
     topographic phase removal tool

   - Changing the coregistration parameters now has an effect
     on the run, if the coregistered slave SAR image has already
     been generated.

   - The option to save a run as a different name now copies all required

   - Deleting tiepoints/GCPs in the tiepoint tools and DEM Correct tool no
     longer causes errors upon adding new points. Tiepoints are now located
     at the correct position on the image to be coregistered.

   - GCPs are now correctly mapped from TCSR to TSR space in DEM Correct.
     Excluding elevation points when running statistics no longer causes
     an error. An error with the colour coding of GCPs was also corrected.

   - In 3-pass mode, residual topographic phase removal from the tool
     now finds the external DEM in the external run for use.

   - The option whether to use the geocoding mapping computed using GCPs, or
     the one computed without using GCPs.

   - A new tool for residual phase removal has been added. To access this
     tool, an external DEM must be present, and 'Enable Baseline Refinement'
     must be selected at the start of the run. The new tool is available
     from the 'Unwrap interferogram phase' tools menu. After successful use
     of the tool, the enhanced interferogram is updated, and unwrapping
     will need to be re-run. This tool has only been tested for 2-pass
     differential interferometry using JERS-1 data.

   - Interferogram self tests may now be performed successfully without
     generating an error message.

   - Changes to OpenEV have added enhanced control over data scaling and
     other improvements.

   - An issue with the DELFT orbit ingest mechanism has been fixed, where
     incorrect state vector times were sometimes derived.

   - The commands importmff and exportmff are now available from the
     command line for Windows users.

   - Corrected the defaults for minimum spatial and interferometric overlap

Changes included in the August 14th, 2001 update of EV-InSAR (version 2.0.1)

   - New code base developed with pipeline and parallel processing

   - New viewer technology which leverages commodity hardware acceleration
     capabilities (OpenGL)

   - New look for the main GUI and user interactive tools