High resolution SAR micro satellite based on active and passive reflectors

Details High resolution SAR micro satellite based on active and passive reflectors High resolution SAR micro satellite based on active and passive reflectors

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.571e..37b&link_type=abstract

Proceedings of The 4S Symposium: Small Satellites, Systems and Services (ESA SP-571). 20 - 24 September 2004, La Rochelle, Franc

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EADS ASTRIUM has analysed for the French CNES agency the feasibility and the design of Synthetic Aperture Radars within the stringent envelope of micro satellites, allowing launching up to three satellites at a time. The primary mission objective is high resolution (2 metres for 17dB.m2/m2 sensitivity) for a 5 km swath width, in X band. Two options have been analysed for this study. The first one was based on a passive reflector. Platform agility is required to achieve steering of the SAR beams in elevation. The second option was based on an active reflector antenna designed by THALES which detailed performances are currently studied under a Research and Technology study with CNES. This paper presents the definition and performances of a micro-satellite based on a passive or active reflector antenna. This satellite design is compatible of a launch of up to three satellites at a time on low earth orbit, and offers stripmap and scansar modes capabilities. Finally, this short overview identifies the technological developments required to achieve the SAR on a micro satellite concept in the mid term.

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