Radiometric calibration and stability of the Landsat-8 Operational Land Imager (OLI)

Brian L. Markham; Julia A. Barsi; Edward Kaita; Lawrence Ong; Ron A. Morfitt; Md. Obaidul Haque

doi:10.1117/12.2188412

8 September 2015 Radiometric calibration and stability of the Landsat-8 Operational Land Imager (OLI)

Brian L. Markham, Julia A. Barsi, Edward Kaita, Lawrence Ong, Ron A. Morfitt, Md. Obaidul Haque

Proceedings Volume 9607, Earth Observing Systems XX; 96070N (2015) https://doi.org/10.1117/12.2188412
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

Landsat-8 and its two Earth imaging sensors, the Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) have been operating on-orbit for 2 1/2 years. The OLI radiometric calibration, which is monitored using on-board lamps, on-board solar diffusers, the moon and vicarious calibration techniques has been stable to within 1% over this period of time. The Coastal Aerosol band, band 1, shows the largest change at about 1% over the period; all other bands have shown no significant trend. OLI bands 1- 4 show small discontinuities in response (+0.1% to 0.2%) beginning about 7 months after launch and continuing for about 1 month associated with a power cycling of the instrument, though the origin of the recovery is unclear. To date these small changes have not been compensated for, but this will change with a reprocessing campaign that is currently scheduled for Fall 2015. The calibration parameter files (each typically covering a 3 month period) will be updated for these observed gain changes. A fitted response to an adjusted average of the lamps, solar and lunar results will represent the trend, sampled at the rate of one value per CPF.

Citation Download Citation

Brian L. Markham, Julia A. Barsi, Edward Kaita, Lawrence Ong, Ron A. Morfitt, and Md. Obaidul Haque "Radiometric calibration and stability of the Landsat-8 Operational Land Imager (OLI)", Proc. SPIE 9607, Earth Observing Systems XX, 96070N (8 September 2015); https://doi.org/10.1117/12.2188412

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