The engineering model for the multispectral imager of the EarthCARE spacecraft
2012
The Multi-Spectral Imager (MSI) will be flown on board the EarthCARE spacecraft, under development by the
European Space Agency (ESA) and the Japan Aerospace Exploration Agency (JAXA). The fundamental objective of the
EarthCARE mission is improving the understanding of the processes involving clouds, aerosols and radiation in the
Earth’s atmosphere. In addition to the MSI instrument, a Cloud Profiling Radar (CPR), an Atmospheric Lidar (ATLID),
and a Broadband Radiometer (BBR) complete the payload of the EarthCARE satellite. By acquiring images of the
clouds and aerosol distribution, the MSI instrument will provide important contextual information in support of the radar
and lidar geophysical retrievals.
The MSI development philosophy is based on the early development of an Engineering Confidence Model (ECM) and
the subsequent development of a Proto-flight Model, the model to be launched on-board the EarthCARE satellite. This
paper provides an overview of the MSI instrument and its development approach. A description of the ECM and its
verification program is also provided.
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