The EarthCARE multispectral imager thermal infrared optical unit detection system design

Rojas, Luis Gomez; Chang, Mark P. J. L.; Baister, Guy; Hopkinson, G.R.; Maher, Matthew; Price, Matthew J.; Skipper, Mark; Wood, Trevor; Woods, David

doi:10.1117/12.869250

Cited by 4 publications

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“…Selection of one of 3 target apertures directed through the optical chain onto the focal plane assembly is performed by the TIR calibration mechanism assembly. The focal plane array (FPA) and relay lens system design have been described in detail [5]. The TIR requires regular calibration, by pointing the optical beam at an on-board blackbody source and to a cold space viewport.…”

Section: Icso 2012mentioning

confidence: 99%

Overview of the EarthCARE multi-spectral imager and results from the development of the MSI engineering model

Chang¹

2019

International Conference on Space Optics — ICSO 2012

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The EarthCARE satellite mission objective is the observation of clouds and aerosols from low Earth orbit. The key spatial context providing instrument within the payload suite of four instruments is the Multi-Spectral Imager (MSI). The MSI is intended to provide information on the horizontal variability of the atmospheric conditions and to identify e.g. cloud type, textures, and temperature. It will form Earth images at 500m ground sample distance (GSD) over a swath width of 150km; it will image Earth in seven spectral bands: one visible, one near-IR (NIR), two shortwave IR (SWIR) and three thermal IR (TIR). The instrument therefore comprises four key parts:

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Section: Icso 2012mentioning

confidence: 99%

Overview of the EarthCARE multi-spectral imager and results from the development of the MSI engineering model

Chang¹

2019

International Conference on Space Optics — ICSO 2012

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“…The approach adopted to improve the NEdTs is to combine oversampling and Time Delay and Integration (TDI). Details of the focal plane array readout process can be found in [2]. The use of TDI demands an extremely tight control of distortion, much better than 1%.…”

Section: Msi Tir Specifications and Optical Designmentioning

confidence: 99%

The EarthCARE multi spectral imager thermal infrared optical unit

Chang

Woods

Baister

et al. 2017

International Conference on Space Optics — ICSO 2010

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“…The instrument directly looks into the integrating sphere ( Figure 12). Resulting in the following measurement signal (5) In this formula SVNS_SP_Direct is the signal level in binary units generated by the instrument Lsp is the radiance level generated by the integrating sphere TVNS is the instrument response function 2. A measurement where the VNS instrument observes the radiance levels coming from the Spectralon diffuser, while the diffuser is illuminated by the integrating sphere.…”

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Characterisation and performance verification results of the EarthCARE multi spectral imager VNS camera

Goeij

Bruijn

Knaap

et al. 2019

International Conference on Space Optics — ICSO 2018

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The European Space Agency (ESA) and the Japan Aerospace Exploration Agency (JAXA) are cooperating to develop the EarthCARE satellite mission with the fundamental objective of improving the understanding of the processes involving clouds, aerosols and radiation in the Earth's atmosphere. A Cloud Profiling Radar (CPR), an Atmospheric LIDAR (ATLID), a Broadband Radiometer (BBR) and a Multi-Spectral Imager (MSI) constitute the payload complement of the EarthCARE satellite. The four instruments will provide synergistic data on cloud and aerosol vertical structure, horizontal cloud structure and radiant flux from sub-satellite cells. By acquiring images of the clouds and aerosol distribution, the MSI instrument will provide important contextual information in support of the radar and LIDAR data processing. After finalisation of the performance testing and calibration measurements the VNS camera was delivered to SSTL mid 2017 for further integration on the MSI Optical Bench Module and alignment with the TIR camera and other MSI subsystems by SSTL.

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The EarthCARE multispectral imager thermal infrared optical unit detection system design

Cited by 4 publications

References 0 publications

Overview of the EarthCARE multi-spectral imager and results from the development of the MSI engineering model

Overview of the EarthCARE multi-spectral imager and results from the development of the MSI engineering model

The EarthCARE multi spectral imager thermal infrared optical unit

Characterisation and performance verification results of the EarthCARE multi spectral imager VNS camera

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