1Science Systems and Applications, Inc. (United States) 2NASA Goddard Space Flight Ctr. (United States) 3Wyant College of Optical Sciences, Univ. of Arizona (United States)
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During the early on-orbit phase Landsat 9 performed an under flight of Landsat 8 in November 2021 which provided a unique opportunity to cross compare measurements from the two OLI sensors. Surface reflectance measurements were collected at two desert sites in the western US, Alkali Lake and Ivanpah Playa, coincident with the satellite overpasses. Surface measurements with the Calibration and Test Site SI-Traceable Transfer Radiometer (CaTSSITTR) were collected as part of the field deployment. CaTSSITTR data combined with in-situ atmospheric measurements are used to predict top-of-atmosphere reflectance for comparison with the OLI and OLI-2.
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Brian N. Wenny, Kurtis Thome, Jeff Czapla-Myers, Nikolaus Anderson, "Cross-calibration of Landsat 8 and 9 using measurements from an ultra-portable field transfer radiometer," Proc. SPIE PC12264, Sensors, Systems, and Next-Generation Satellites XXVI, PC122640C (28 October 2022); https://doi.org/10.1117/12.2636246