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METimage - a multi-spectral imaging radiometer for the EUMETSAT Polar System follow-on satellite mission

机译：METimage-用于EUMETSAT极地系统后续卫星任务的多光谱成像辐射仪

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摘要

The evolving needs of the meteorological community concerning the EUMETSAT Polar System follow-on satellite mission (Post-EPS) require the development of a high-performance multi-spectral imaging radiometer, the so-called Visible-Infrared Imager (VII). Recognizing these needs, Jena Optronik GmbH proposed an innovative instrument concept, METimage. METimage is the candidate instrument to fulfill the VII mission on Post-EPS.rnCore item of the METimage instrument is a rotating telescope scanner covering the large swath width of about 2800 km, which is needed for a global coverage by a polar platform. The de-rotated image facilitates in-field spectral channel separation, which allows tailoring individual channel·GSD (ground sampling distance) and features like TDI (time delay and integration). State-of-the-art detector arrays and read-out electronics will be employed. The reflecting telescope design is able to support demanding requirements on image quality and ground resolution.rnThe chosen instrument concept covers a spectral range from 443 nm to 13.345 μm and provides 20 to 22 spectral channels. The ground sampling distance is 500 m and 250 m for selected high-resolution channels from low Earth orbit.rnThe METimage instrument development is currently in phase B and has undergone its System Requirements Review in summer 2010.
机译：气象界对EUMETSAT极地系统后续卫星任务（EPS）的不断发展的需求要求开发一种高性能的多光谱成像辐射计，即所谓的可见红外成像仪（VII）。认识到这些需求，Jena Optronik GmbH提出了一种创新的仪器概念METimage。 METimage是在EPS上完成VII任务的候选仪器。METimage仪器的核心项目是旋转望远镜扫描仪，覆盖约2800 km的大条幅，这是极地平台进行全球覆盖所必需的。旋转后的图像有助于进行现场光谱通道分离，从而可以调整单个通道·GSD（地面采样距离）和诸如TDI（时延和积分）之类的功能。将采用最先进的检测器阵列和读出电子设备。反射望远镜的设计能够满足对图像质量和地面分辨率的苛刻要求。所选的仪器概念涵盖了443 nm至13.345μm的光谱范围，并提供20至22个光谱通道。从低地球轨道选择的高分辨率通道的地面采样距离为500 m和250 m。rn METimage仪器的开发目前处于B阶段，并于2010年夏季进行了系统要求审查。

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