EarthView^® InSAR v3

Changes included in EV-InSAR (version 3.0)

• The coherent target monitoring (CTM) module (beta release) has now been integrated with the core InSAR software. The software must be licensed for this module in order for it to be used. The general release is expected to be early in 2004.

· A new version of Python, and (on Windows) a new version of MKS Toolkit (v8.6) have b een incorporated into the product.

· The processor was not reading the Doppler centroid and rate values correctly from “flipped” images produced by APP (on descending passes, APP flips the image from sensor geometry to a nominal “North-up” orientation). This in turn caused problems with image resampling and co-registration. The problem is most obvious with high Doppler centroid (low latitude) RADARSAT descending passes. In this case the coherence is poor, and shows strong banding. We recommend reprocessing any descending RADARSAT pair at latitudes of less than 25 degrees.

• A mistake in tutorial 5 has been corrected, which described how to interpret the sign of a change product. This table has been corrected.
• The option to re-run a given step has been added to the EV-InSAR GUI in the form of a re-run icon.
• The ability to apply residual phase corrections to the raw interferogram has been added, primarily for CTM work.
• Improvements have been made to the way processing errors are reported.
• Coarse tiepoints now work properly in the master/slave tiepoint editor. The use of such points is still discouraged.
• A bug preventing report files from being generated has been fixed.
• Several reported ENVISAT ingest issues have been solved. Differential runs using ENVISAT data no longer cause an error during SAR simulation.