The EnMAP hyperspectral imaging spectrometer: instrument concept, calibration, and technologies

B. Sang; J. Schubert; S. Kaiser; V. Mogulsky; C. Neumann; K.-P. Förster; S. Hofer; T. Stuffler; H. Kaufmann; A. Müller; T. Eversberg; C. Chlebek

doi:10.1117/12.794870

27 August 2008 The EnMAP hyperspectral imaging spectrometer: instrument concept, calibration, and technologies

B. Sang, J. Schubert, S. Kaiser, V. Mogulsky, C. Neumann, K.-P. Förster, S. Hofer, T. Stuffler, H. Kaufmann, A. Müller, T. Eversberg, C. Chlebek

Author Affiliations +

Proceedings Volume 7086, Imaging Spectrometry XIII; 708605 (2008) https://doi.org/10.1117/12.794870
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

The Environmental Mapping and Analysis Program (EnMAP) is a German space based hyperspectral mission planned for launch in 2012. The hyperspectral instrument covers the wavelength range from 420nm to 2450nm using a dual spectrometer layout. Both f/3 spectrometers employ a prism disperser for maximum throughput and are linked to the common foreoptics by a micromechanical field splitter. Together with custom designed silicon and MCT-based detector arrays this sensor design exhibits a peak system SNR of 1000 at 495nm and of more than 300 at 2200nm. Stable and precise in orbit performance is ensured by a multi loop thermal control system and a system calibration which relies on onboard sources as well as a full aperture diffuser.

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B. Sang, J. Schubert, S. Kaiser, V. Mogulsky, C. Neumann, K.-P. Förster, S. Hofer, T. Stuffler, H. Kaufmann, A. Müller, T. Eversberg, and C. Chlebek "The EnMAP hyperspectral imaging spectrometer: instrument concept, calibration, and technologies", Proc. SPIE 7086, Imaging Spectrometry XIII, 708605 (27 August 2008); https://doi.org/10.1117/12.794870

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