Proposed Concept for the Visible/Infrared Imaging Radiometer for Second Generation METEOSAT

B. Kunkel; F. Blechinger; J. L. Bezy; G. Ratier; D. R. Lobb; M. A. Cutter; E. Hettlage; E. O'Mongain; A. F.J. Morgownik; B. C. Taylor

doi:10.1117/12.969693

1 April 1990 Proposed Concept for the Visible/Infrared Imaging Radiometer for Second Generation METEOSAT

B. Kunkel, F. Blechinger, J. L. Bezy, G. Ratier, D. R. Lobb, M. A. Cutter, E. Hettlage, E. O'Mongain, A. F.J. Morgownik, B. C. Taylor

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Proceedings Volume 1191, Optical Systems for Space and Defence; (1990) https://doi.org/10.1117/12.969693
Event: SIRA/Optical Systems for Space and Defence, 1989, London, United Kingdom

Abstract

The current METEOSAT Operational Program will continue its service until 1995, possibly till 1997. Subsequently, the METEOSAT Second Generation (MSG) is planned to replace the current system (similar to the "compatible" US " GOES-Next" and the Japanese GMS follow--on generation as major elements of the global geostationary meteorological satellite systems). The emphasis for this paper is on a 3-axis stabilised platform for MSG, though chances are that the current spin-stabilised concept may be maintained for cost reasons. The instrument described in this paper represents the " core" payload element in either satel-lite version; the total payload is expected to consist of: a Visible/Infrared Imaging Radiometer: an IR Vertical Sounder (IRS) - see subsequent paper. The technical concept for the first instrument, the VIRI, is presented as a result of a study performed on behalf of and supported by ESA/ESTEC (/1/). The Imaging radiometer shall have 2 visible and 6 IR channels for cloud tracking and sea surface / cloud top temperature measurements (compared to currently 3), partly split channels at reduced bandwidth and 2 km IFOV. The paper will present the proposed solution of a " hybrid" scan system, involving 2-axis mechanical scan combined with a North/South fine scan by means of short detector arrays. It should be noted that during the preparation of this paper a revised set of requirements for an imager designated EVIRI (Enhanced VIRI) has been issued in a proposal invitation which can not yet fully be covered within this paper; an outlook to the technical options to incorporate these requirements in § 4.

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B. Kunkel, F. Blechinger, J. L. Bezy, G. Ratier, D. R. Lobb, M. A. Cutter, E. Hettlage, E. O'Mongain, A. F.J. Morgownik, and B. C. Taylor "Proposed Concept for the Visible/Infrared Imaging Radiometer for Second Generation METEOSAT", Proc. SPIE 1191, Optical Systems for Space and Defence, (1 April 1990); https://doi.org/10.1117/12.969693

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KEYWORDS

Satellites

Imaging systems

Radiometry

Infrared imaging

Sensors

Mirrors

Calibration

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