&lt;title&gt;Calibration of the visible/near-infrared channels of the Along-Track Scanning Radiometer-2 (ATSR-2)&lt;/title&gt;

Smith, David L.; Read, P. D.; Mutlow, C. T.

doi:10.1117/12.298114

Cited by 12 publications

(13 citation statements)

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“…However, calibration over desert sites could be used to detect an unlikely large variation. [18], [30], [36], ATSR-2 [34], Meteosat [5], [24], and HRV/SPOT sensors [17]. They can also be used to estimate the multiangular calibration of wide field of view sensors equipped with CCD arrays such as POLDER.…”

Section: B Multiangular Calibrationmentioning

confidence: 99%

“…ATSR-2 has four infrared channels and three visible/nearinfrared channels very close to POLDER spectral bands: 560, 660, and 870 nm. ATSR-2 is calibrated using an on-board diffuser monitored by a photodiode, and using desert sites to measure the drift of the on-board calibration system [34]. A successful cross-calibration between both instruments would be a good validation of both sensor's absolute calibration and also a partial validation of POLDER multiangular calibration.…”

Section: Cross Calibration Between Polder and Atsr2mentioning

confidence: 99%

“…These problems lead to the decision of using natural targets for OCTS calibration [26]. ATSR2 on board ERS2 is also equipped with a visible sunobserving calibration device which is operationally used but needs to be completed by multitemporal calibration over desert sites to correct a drift of the solar calibration signal [34]. Many future instruments have also based their calibration mainly on on-board devices, such as SeaWIFS, MODIS, and MISR onboard EOS AM-1, but are also developing vicarious methods in order to verify the on-board device [33].…”

Section: Introductionmentioning

confidence: 99%

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Results of POLDER in-flight calibration

Hagolle

Goloub

Deschamps

et al. 1999

IEEE Trans. Geosci. Remote Sensing

135

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Abstract-POLDER is a CNES instrument on board NASDA's ADEOS polar orbiting satellite, which was successfully launched in August 1996. On October 30, 1996, POLDER entered its nominal acquisition phase and worked perfectly until ADEOS's early end of service on June 30, 1997. POLDER is a multispectral imaging radiometer/polarimeter designed to collect global and repetitive observations of the solar radiation reflected by the earth/atmosphere system, with a wide field of view (2400 km) and a moderate geometric resolution (6 km). The instrument concept is based on telecentric optics, on a rotating wheel carrying 15 spectral filters and polarizers, and on a bidimensional charge coupled device (CCD) detector array. In addition to the classical measurement and mapping characteristics of a narrow-band imaging radiometer, POLDER has a unique ability to measure polarized reflectances using three polarizers (for three of its eight spectral bands, 443 to 910 nm) and to observe target reflectances from 13 different viewing directions during a single satellite pass.One of POLDER's original features is that its in-flight radiometric calibration does not rely on any on-board device. Many calibration methods using well-characterized calibration targets have been developed to achieve a very high calibration accuracy. This paper presents the various methods implemented in the in-flight calibration plan and the results obtained during the instrument calibration phase: absolute calibration over molecular scattering, interband calibration over sunglint and clouds, multiangular calibration over deserts and clouds, intercalibration with Ocean Color and Temperature Scanner (OCTS), and water vapor channels calibration over sunglint using meteorological analysis. A brief description of the algorithm and of the performances of each method is given.

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Section: B Multiangular Calibrationmentioning

confidence: 99%

Section: Cross Calibration Between Polder and Atsr2mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Results of POLDER in-flight calibration

Hagolle

Goloub

Deschamps

et al. 1999

IEEE Trans. Geosci. Remote Sensing

135

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“…9 Of particular interest, the use of bright desert and ice targets is to perform intercomparisons. Here, cloud free-top of atmosphere (TOA) reflectances are extracted from the L1b products and compared with those of other sensors, taking into account the view/solar geometry, spectral differences, and atmospheric conditions.…”

Section: Postlaunch Activitiesmentioning

confidence: 99%

“…4, following the design approach that was used successfully for ATSR-2 and AATSR. 9 Once per orbit, a white tile diffuser [Zenith®, which is a polytetraflouroetheleye (PTFE)-based material] is illuminated by the sun at normal incidence. The reflected light is directed toward the main instrument telescope by three relay mirrors, m 1 , m 2 , and m 3 .…”

Section: Solar Reflectance Channelsmentioning

confidence: 99%

Calibration approach and plan for the sea and land surface temperature radiometer

Smith

Nightingale

Mortimer

et al. 2014

J. Appl. Remote Sens

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Abstract. The sea and land surface temperature radiometer (SLSTR) to be flown on the European Space Agency's (ESA) Sentinel-3 mission is a multichannel scanning radiometer that will continue the 21 year dataset of the along-track scanning radiometer (ATSR) series. As its name implies, measurements from SLSTR will be used to retrieve global sea surface temperatures to an uncertainty of <0.3 K traced to international standards. To achieve, these low uncertainties require an end-to-end instrument calibration strategy that includes prelaunch calibration at subsystem and instrument level, on-board calibration systems, and sustained postlaunch activities. The authors describe the preparations for the prelaunch calibration activities, including the spectral response, the instrument level alignment tests, and the solar and infrared radiometric calibrations. A purpose built calibration rig has been designed and built at the Rutherford Appleton Laboratory space department (RAL Space) that will accommodate the SLSTR instrument, the infrared calibration sources, and the alignment equipment. The calibration rig has been commissioned and results of these tests will be presented. Finally, the authors will present the planning for the on-orbit monitoring and calibration activities to ensure that the calibration is maintained. These activities include vicarious calibration techniques that have been developed through previous missions and the deployment of ship-borne radiometers. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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