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- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba definition "The Medium Resolution Imaging Spectrometer (MERIS) is a core European Space Agency (ESA) instrument on the ENVISAT spacecraft (launched March 1, 2002). The primary objective of MERIS is to monitor ocean color and marine biophysical parameters in oceans and coastal regions with applications to land and atmospheric processes. MERIS is a passive push-broom optical system using Charge Coupled Devices (CCDs) at high spectral resolution (5-20 nm) in 15 channels from0.405 to 1.030 micrometers with a swath width of 1500 km. MERIS performed simultaneous spatial and spectral imaging. Spatial imaging is performed in a push-broom mode and spectral imaging is performed by diffraction grating dispersion. MERIS images are converted into electrical signals using CCDs. MERIS operates in two modes: Full Resolution (Direct Transmission) Mode and Low Resolution (Average Transmission) Mode. Full resolution mode uses 15 channels with a resolution of 0.25 x 0.25 km and a spectral resolution of 2.5 nm. Data will be relayed directly to the ground station in this mode and is not stored on-board. Low Resolution Mode uses 15 channels with a spatial resolution of 1 x 1 km and a spectral resolution of 2.5 nm. The MERIS imaging system consists of six overlapping optical modules, each with a 14 degree FOV. The FOV is deflected in the along-track direction by a depointing mirror. The ground imager receives light from the Earth and formed an Earth image on the entrance slit of the spectrometer. The spectrometer then dispersed the light onto an area array CCD. The spectrometer is comprised of a refracting block and a concave reflecting diffraction grating. All 15 MERIS channels are programmable in width and wavelength. On-board calibration is performed by seperate light sources and through the use of the depointing mirror as a shutter. All of the mechanical, thermal electronic and optical devices are mounted externally to the platform. MERIS is operated synergistically with the RA-2, ASAT, and AATSR instruments. For more information on MERIS, link to http://wdc.dlr.de/sensors/meris/ For more information on ENVISAT, link to http://envisat.esa.int/ Group: Instrument_Details Entry_ID: MERIS Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Passive Remote Sensing Instrument_Type: Spectrometers/Radiometers Instrument_Subtype: Imaging Spectrometers/Radiometers Short_Name: MERIS Long_Name: Medium Resolution Imaging Spectrometer End_Group Group: Associated_Platforms Short_Name: ENVISAT End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Visible Number_Channels: 15 End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Near Infrared Number_Channels: 15 Spectral_Frequency_Coverage_Range: 0.4-1.5um End_Group Online_Resource: http://envisat.esa.int/instruments/meris Online_Resource: http://wdc.dlr.de/sensors/meris/ Sample_Image: http://envisat.esa.int/instruments/tour-index/hardware_img/x_Meris50.jpg Creation_Date: 2007-09-17 Group: Instrument_Logistics Data_Rate: 1.5 Mbytes/s Instrument_Owner: ESA End_Group End_Group" @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba id "1655836" @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_id 2e38423f-a5e6-411a-88d3-8fdc00aaf30a @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_id 4f81c61c-f100-4bc4-9664-d9b70d2f162f @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_id 6015ef7b-f3bd-49e1-9193-cc23db566b69 @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_id 944b7691-af37-4fb4-9393-c114e7997829 @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_id b2140059-b3ca-415c-b0a7-3e142783ffe8 @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_label "Earth Remote Sensing Instruments" @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_label "Imaging Spectrometers/Radiometers" @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_label "Instruments" @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_label "Passive Remote Sensing" @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba path_label "Spectrometers/Radiometers" @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba prefLabel "MERIS" @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba reference "" @default.
- fc3f3ca6-1578-47b2-9d99-bc35ca85e0ba tag "Instruments" @default.
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