e-CORCE : a system perspective for a daily imagery of the entire Earth at 1m resolution
- Paper number
IAC-08.B1.5.3
- Author
Mr. Francis Martinerie, Thales Alenia Space France, France
- Coauthor
Mr. André LAURENS, Centre National d'Etudes Spatiales (CNES), France
- Year
2008
- Abstract
e-CORCE ([RD1]) covers a recent initiative launched by CNES concerning a future service that would provide a representation of the entire Earth with one meter resolution with daily update. The definition of the corresponding space system has to cope with several challenges, and implies many technico-economical trade-offs. ThalesAleniaSpace has conducted under a CNES contract a system-level feasibility study aiming at defining a baseline solution for e-Corce. The key technical themes of imagery chain, space segment, space ground telecommunications, and ground segment complexity for mission management and data processing were considered. Trade-offs have been conducted in terms of both technical performances and economical compromise. The retained solution consists of : - a LEO-SSO constellation of minisatellites embedding instruments and dedicated resources allowing for wide swath, high resolution, and systematic imagery of the orbit lightened part; - high rate transmission of data to a set of interconnected ground stations, with optimised locations and resources with regards to data management needs : reception, exchange, processing, and diffusion. The proposed presentation and paper detail the solution physical and functional architecture, and performances, and identifies the possibilities of disruptive development approaches at all levels. Major trade-offs will be recalled, at imaging chain (image quality and instrument), constellation (constellation sizing, satellite class), telecom (telecommunication architecture), and ground segment (number and location of stations, ground segment complexity) levels, and preliminary development hypotheses will be provided. [RD1]: The One Meter Shop Concept : e-CORCE. J.P. Antikidis et al. 58th IAC Congress – 2007
- Abstract document
- Manuscript document
IAC-08.B1.5.3.pdf (🔒 authorized access only).
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