RF-excited plasma lamps for use as sources in OGSE integrating spheres

Arecchi, Angelo V.; McKee, Greg; Durell, Christopher

doi:10.1117/12.894227

Cited by 3 publications

(1 citation statement)

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“…Inclusion of new sources is planned such as RF lamps to enhance blue light output. 5 The approach to establish SI traceability is to the standard Watt via NIST's POWR facility and through development of a calibration approach based on NIST's Spectral Irradiance and Radiance Responsivity Calibrations with Uniform Sources (SIRCUS). 4 …”

Section: Instrument-level Laboratory Testingmentioning

confidence: 99%

Demonstrating the error budget for the Climate Absolute Radiance and Refractivity Observatory through solar irradiance measurements

Thome

McCorkel

McAndrew

2015

Earth Observing Systems XX

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The Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission addresses the need to observe highaccuracy, long-term climate change trends and to use decadal change observations as a method to determine the accuracy of climate change. A CLARREO objective is to improve the accuracy of SI-traceable, absolute calibration at infrared and reflected solar wavelengths to reach on-orbit accuracies required to allow climate change observations to survive data gaps and observe climate change at the limit of natural variability. Such an effort will also demonstrate National Institute of Standards and Technology (NIST) approaches for use in future spaceborne instruments.The current work describes the results of laboratory and field measurements with the Solar, Lunar for Absolute Reflectance Imaging Spectroradiometer (SOLARIS) which is the calibration demonstration system (CDS) for the reflected solar portion of CLARREO. SOLARIS allows testing and evaluation of calibration approaches, alternate design and/or implementation approaches and components for the CLARREO mission. SOLARIS also provides a test-bed for detector technologies, non-linearity determination and uncertainties, and application of future technology developments and suggested spacecraft instrument design modifications. Results of laboratory calibration measurements are provided to demonstrate key assumptions about instrument behavior that are needed to achieve CLARREO's climate measurement requirements. Absolute radiometric response is determined using laser-based calibration sources and applied to direct solar views for comparison with accepted solar irradiance models to demonstrate accuracy values giving confidence in the error budget for the CLARREO reflectance retrieval.

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Section: Instrument-level Laboratory Testingmentioning

confidence: 99%

Demonstrating the error budget for the Climate Absolute Radiance and Refractivity Observatory through solar irradiance measurements

Thome

McCorkel

McAndrew

2015

Earth Observing Systems XX

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Opto-Mechanical Assembly and Analysis of Imaging Spectrometer

Zhang

Zheng

2020

5th International Symposium of Space Optical Instruments and Applications

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Error budget for a calibration demonstration system for the reflected solar instrument for the climate absolute radiance and refractivity observatory

2013

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A goal of the Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission is to observe highaccuracy, long-term climate change trends over decadal time scales. The key to such a goal is to improving the accuracy of SI traceable absolute calibration across infrared and reflected solar wavelengths allowing climate change to be separated from the limit of natural variability. The advances required to reach on-orbit absolute accuracy to allow climate change observations to survive data gaps exist at NIST in the laboratory, but still need demonstration that the advances can move successfully from to NASA and/or instrument vendor capabilities for spaceborne instruments. The current work describes the radiometric calibration error budget for the Solar, Lunar for Absolute Reflectance Imaging Spectroradiometer (SOLARIS) which is the calibration demonstration system (CDS) for the reflected solar portion of CLARREO. The goal of the CDS is to allow the testing and evaluation of calibration approaches, alternate design and/or implementation approaches and components for the CLARREO mission. SOLARIS also provides a test-bed for detector technologies, non-linearity determination and uncertainties, and application of future technology developments and suggested spacecraft instrument design modifications. The resulting SI-traceable error budget for reflectance retrieval using solar irradiance as a reference and methods for laboratory-based, absolute calibration suitable for climatequality data collections is given. Key components in the error budget are geometry differences between the solar and earth views, knowledge of attenuator behavior when viewing the sun, and sensor behavior such as detector linearity and noise behavior. Methods for demonstrating this error budget are also presented.

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RF-excited plasma lamps for use as sources in OGSE integrating spheres

Cited by 3 publications

References 0 publications

Demonstrating the error budget for the Climate Absolute Radiance and Refractivity Observatory through solar irradiance measurements

Demonstrating the error budget for the Climate Absolute Radiance and Refractivity Observatory through solar irradiance measurements

Opto-Mechanical Assembly and Analysis of Imaging Spectrometer

Error budget for a calibration demonstration system for the reflected solar instrument for the climate absolute radiance and refractivity observatory

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