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Proceedings Paper

The MetOp second generation 3MI instrument
Author(s): Ilias Manolis; Semen Grabarnik; Jérôme Caron; Jean-Loup Bézy; Marc Loiselet; Maurizio Betto; Hubert Barré; Graeme Mason; Roland Meynart
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Paper Abstract

The MetOp-SG programme is a joint Programme of EUMETSAT and ESA. ESA develops the prototype MetOp-SG satellites (including associated instruments) and procures, on behalf of EUMETSAT, the recurrent satellites (and associated instruments). Two parallel, competitive phase A/B1 studies for MetOp Second Generation (MetOp-SG) have been concluded in May 2013. The implementation phases (B2/C/D/E) are planned to start the first quarter of 2014. ESA is responsible for instrument design of six missions, namely Microwave Sounding Mission (MWS), Scatterometer mission (SCA), Radio Occultation mission (RO), Microwave Imaging mission (MWI), Ice Cloud Imager (ICI) and Multi-viewing, Multi-channel, Multi-polarisation imaging mission (3MI). The paper will present the main performances of the 3MI instrument and will highlight the performance improvements with respect to its heritage derived by the POLDER instrument, such as number of spectral channels and spectral range coverage, swath and ground spatial resolution. The engineering of some key performance requirements (multi-viewing, polarisation sensitivity, straylight etc.) will also be discussed. The results of the feasibility studies will be presented together with the programmatics for the instrument development. Several pre-development activities have been initiated to retire highest risks and to demonstrate the ultimate performances of the 3MI optics. The scope, objectives and current status of those activities will be presented. Key technologies involved in the 3MI instrument design and implementation are considered to be: the optical design featuring aspheric optics, the implementation of broadband Anti Reflection coatings featuring low polarisation and low de-phasing properties, the development and qualification of polarisers with acceptable performances as well as spectral filters with good uniformities over a large clear aperture.

Paper Details

Date Published: 16 October 2013
PDF: 13 pages
Proc. SPIE 8889, Sensors, Systems, and Next-Generation Satellites XVII, 88890J (16 October 2013); doi: 10.1117/12.2028662
Show Author Affiliations
Ilias Manolis, Directorate of Earth Observation (Netherlands)
Semen Grabarnik, European Space Research and Technology Ctr. (Netherlands)
Jérôme Caron, Directorate of Earth Observation (Netherlands)
Jean-Loup Bézy, Directorate of Earth Observation (Netherlands)
Marc Loiselet, Directorate of Earth Observation (Netherlands)
Maurizio Betto, Directorate of Earth Observation (Netherlands)
Hubert Barré, Directorate of Earth Observation (Netherlands)
Graeme Mason, Directorate of Earth Observation (Netherlands)
Roland Meynart, Directorate of Earth Observation (Netherlands)

Published in SPIE Proceedings Vol. 8889:
Sensors, Systems, and Next-Generation Satellites XVII
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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