Landsat 9 Operational Land Imager2 (OLI2) diffuser panel response lab predictions vs. pre-launch measurements

Raviv Levy; Brian L. Markham

doi:10.1117/12.2567728

17 September 2020 Landsat 9 Operational Land Imager2 (OLI2) diffuser panel response lab predictions vs. pre-launch measurements

Raviv Levy, Brian L. Markham

Author Affiliations +

Proceedings Volume 11501, Earth Observing Systems XXV; 115010P (2020) https://doi.org/10.1117/12.2567728
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Abstract

The radiometric calibration of OLI-2 for Landsat 9 uses two types of sources: pre-launch radiancecalibrated sphere sources and on-board flight solar diffuser panels. For both calibration articles the instrument contractor, Ball Aerospace Corp. assured the NIST scale transfer via laboratory measurements. The NIST reflectance scale transfer was conducted for the OLI-2 two flight diffusers at the University of Arizona Optical Sciences Center. In this report we present an approach in which the per detector information can be derived for the reflectance panel sources from their BRDF characterization. Using such information enables a cross-check of the as measured reflectance results during the prelaunch diffuser collects illuminated by a Heliostat. This information then enables a derivation of the uncertainty levels to allow assessment of the two radiometric calibration paths agreement.

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Citation Download Citation

Raviv Levy and Brian L. Markham "Landsat 9 Operational Land Imager2 (OLI2) diffuser panel response lab predictions vs. pre-launch measurements", Proc. SPIE 11501, Earth Observing Systems XXV, 115010P (17 September 2020); https://doi.org/10.1117/12.2567728

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