[Sls-ngu] lossless compression performances

[Moury Gilles]

Dear NGU WG member,

Please find attached lossless simulation results for typical uploads for earth observation hiresolution satellite (in our case PLEIADES-HR mission). Those are workplans which are uploaded every day. As you will see the compression ratio (CR) for various lossless compression algorithms (mostly from the zip family) is maximum 1.4 which is not that encouraging. For CCSDS universal lossless coder (USES) , the compression ratio is close to 1 (no compression).

 <<LosslessCompressionResults.xls>> 
Regards,
Gilles

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Gilles MOURY
CNES Toulouse
Expert senior "Plateforme Satellite"
ECSS Technical Authority chairman
Sous-Direction "Techniques Véhicule, Architecture & Intégration"
DCT/TV-RA  -  Bpi 1416
18, avenue Edouard Belin
F-31401 TOULOUSE Cedex 9
http://www.cnes.fr
tel : +33 (0)5 61 27 3790
fax : +33 (0)5 61 27 4099
sec : +33 (0)5 61 27 3882
mob : +33 (0)6 83 56 0485
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