Abstract
The Landsat Data Continuity Mission was launched February 11, 2013, and was renamed Landsat-8 when satellite operations were handed off to USGS on May 30th of that year. Landsat-8 carries two instruments: the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS). Typically once per month, the satellite executes a series of attitude maneuvers to scan the Moon over the entire OLI focal plane array, capturing lunar images in all 9 reflective solar bands (442 nm to 2200 nm) with each of the 14 Sensor Chip Assemblies (SCAs). These images have been processed at the USGS Earth Resources Observations and Science (EROS) Center to level-1R data, which are radiometrically corrected but have no geometric correction or re-sampling applied. The Lunar Calibration facility at the USGS Astrogeology Science Center in Flagstaff, AZ, has generated lunar irradiance measurements from the OLI level-1R Moon data for comparison against its radiometric reference, the lunar spectral irradiance model commonly known as the Robotic Lunar Observatory (ROLO) model. Spacecraft attitude parameters from the Landsat-8 ancillary data were used to find the geometric particulars of the OLI Moon scans, and derive the image oversampling factors used to scale the measurements. The results from spectral and time-series comparisons of these OLI lunar measurements against the USGS lunar irradiance reference will be presented.
Lunar Calibration Analysis of Landsat-8 OLI Images of the Moon
The Landsat Data Continuity Mission was launched February 11, 2013, and was renamed Landsat-8 when satellite operations were handed off to USGS on May 30th of that year. Landsat-8 carries two instruments: the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS). Typically once per month, the satellite executes a series of attitude maneuvers to scan the Moon over the entire OLI focal plane array, capturing lunar images in all 9 reflective solar bands (442 nm to 2200 nm) with each of the 14 Sensor Chip Assemblies (SCAs). These images have been processed at the USGS Earth Resources Observations and Science (EROS) Center to level-1R data, which are radiometrically corrected but have no geometric correction or re-sampling applied. The Lunar Calibration facility at the USGS Astrogeology Science Center in Flagstaff, AZ, has generated lunar irradiance measurements from the OLI level-1R Moon data for comparison against its radiometric reference, the lunar spectral irradiance model commonly known as the Robotic Lunar Observatory (ROLO) model. Spacecraft attitude parameters from the Landsat-8 ancillary data were used to find the geometric particulars of the OLI Moon scans, and derive the image oversampling factors used to scale the measurements. The results from spectral and time-series comparisons of these OLI lunar measurements against the USGS lunar irradiance reference will be presented.