ASAR Processor Releases

Processor Releases

The ASAR generic processor was developed for near real time (NRT) and off-line processing by MDA.

 

Envisat processing requirements

(As per Envisat Ground Segment – ASAR Processing and Product Quality Requirements, PO-RS-ESA-GS-00245, Issue 3.3, 01 July 1997 - Image Quality Parameter)

Image Quality Parameter Envisat ASAR
Single Beam
Envisat ASAR
ScanSar
RANGE IRF < 10% < 10%
AZIMUTH IRF < 10% < 10%
PSLR degradation < 2 dB < 2 dB
ISLR degradation < 2 dB < 2 dB
Doppler Centroid Accuracy 50 Hz 25 Hz
Radiometric Error < 0.1 dB < 0.2 dB
Point Target Linearity > 0.97 > 0.97
Absolute Location accuracy < 2 pixel lengths < 2 pixel lengths
Geometric misregistration < 0.5 pixel lengths < 0.5 pixel lengths

 

IPF-ASAR processor updates

The following table lists all IPF-ASAR processor updates since 2008, when it was updated to run on a Linux system.
Prior to this, PF-ASAR was designed to run on an AIX system.

IPF Version Release Date 
5.00 26 June 2007 
5.01 3 April 2008 
5.02 1 December 2008 
5.03  26 May 2009 
5.03L02 25 August 2009 
5.03L03 9 October 2009 
5.04 17 September 2010 
6.00 16 December 2011 
6.02 30 April 2012 
6.03 3 July 2015 (current version used in processing) 
6.04 25 January 2016 (internal release, not currently used for processing)