Presentation + Paper
30 September 2022 Landsat 9 Operational Land Imager2 (OLI2) on-orbit results of new special characterizations
Author Affiliations +
Abstract
The Operational Land Imager2 (OLI2), is a visible to short-wave infrared pushbroom imaging radiometer. The OLI2 generates data in 9 spectral bands by sub-selecting the operational detectors within the focal plane array for each spectral band. This sub selection of detectors, also known as the operational flight detector-select-map, was determined pre-launch based on various radiometric performance characteristics. Due to new updates made in OLI2 it is possible to repeat similar extended radiometric characterization of all detectors on the focal plane while the system is on-orbit. This new characterization uses the OLI2 on-orbit calibration devices (Shutter and Stim lamp) observations while toggling the detector select maps from the operational setting to cycle through all possible detectors. Another special new ability for OLI2 was the addition of the stim-lamp non-linearity characterization collects. Both of these new abilities have been successfully executed on-orbit. In this paper and presentation, we present the results from these new characterization capabilities that extended the dynamic range of the non-linearity characterization as well as the on-orbit radiometric characteristics for the full set of focal plane detectors. Such new characterizations further enhance the information on the state of health and aging of the focal plane, as well as enable transfer of radiometric calibration from the operational detector-select to any other detector select. Overall these characterizations help to assure a robust high quality radiometric performance of OLI2 that should last far into the mission life time and beyond.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Raviv Levy, Jeffrey Miller, and Kurtis J. Thome "Landsat 9 Operational Land Imager2 (OLI2) on-orbit results of new special characterizations", Proc. SPIE 12232, Earth Observing Systems XXVII, 122320X (30 September 2022); https://doi.org/10.1117/12.2633665
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KEYWORDS
Sensors

Earth observing sensors

Landsat

Calibration

Diffusers

Signal to noise ratio

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