Landsat-7 ETM+ radiometric calibration status

Now in its 17th year of operation, the Enhanced Thematic Mapper + (ETM+), on board the Landsat-7 satellite, continues to systematically acquire imagery of the Earth to add to the 40+ year archive of Landsat data. Characterization of the ETM+ on-orbit radiometric performance has been on-going since its launch in 1999. The radiometric calibration of the reflective bands is still monitored using on-board calibration devices, though the Pseudo-Invariant Calibration Sites (PICS) method has proven to be an effective tool as well. The calibration gains were updated in April 2013 based primarily on PICS results, which corrected for a change of as much as -0.2%/year degradation in the worst case bands. A new comparison with the SADE database of PICS results indicates no additional degradation in the updated calibration. PICS data are still being tracked though the recent trends are not well understood. The thermal band calibration was updated last in October 2013 based on a continued calibration effort by NASA/Jet Propulsion Lab and Rochester Institute of Technology. The update accounted for a 0.036 W/m2 sr μm or 0.26K at 300K bias error. The updated lifetime trend is now stable to within +/- 0.4K.

[1]  Md. Obaidul Haque,et al.  Radiometric calibration updates to the Landsat collection , 2016, Optical Engineering + Applications.

[2]  John R. Schott,et al.  Landsat TM and ETM+ thermal band calibration , 2003, SPIE Optics + Photonics.

[3]  M. Leroy,et al.  Selection and characterization of Saharan and Arabian desert sites for the calibration of optical satellite sensors , 1996 .

[4]  Brian L. Markham,et al.  Landsat-7 ETM+ on-orbit reflective-band radiometric characterization , 2004, IEEE Transactions on Geoscience and Remote Sensing.

[5]  Brian L. Markham,et al.  Continued monitoring of Landsat reflective band calibration using pseudo-invariant calibration sites , 2012, 2012 IEEE International Geoscience and Remote Sensing Symposium.

[6]  Bertrand Fougnie,et al.  Cross Calibration Over Desert Sites: Description, Methodology, and Operational Implementation , 2013, IEEE Transactions on Geoscience and Remote Sensing.

[7]  Larry Leigh,et al.  The Ground-Based Absolute Radiometric Calibration of Landsat 8 OLI , 2015, Remote. Sens..

[8]  Brian L. Markham,et al.  Landsat-7 ETM+: 12 Years On-Orbit Reflective-Band Radiometric Performance , 2012, IEEE Transactions on Geoscience and Remote Sensing.

[9]  Simon J. Hook,et al.  Absolute Radiometric In-Flight Validation of Mid Infrared and Thermal Infrared Data From ASTER and MODIS on the Terra Spacecraft Using the Lake Tahoe, CA/NV, USA, Automated Validation Site , 2007, IEEE Transactions on Geoscience and Remote Sensing.

[10]  Ron A. Morfitt.  Landsat 8 OLI radiometric calibration performance after three years (Conference Presentation) , 2016, Optical Engineering + Applications.

[11]  Dennis L. Helder,et al.  Landsat-5 TM and Landsat-7 ETM+ absolute radiometric calibration using the reflectance-based method , 2004, IEEE Transactions on Geoscience and Remote Sensing.

[12]  Julia A. Barsi,et al.  Thermal infrared radiometric calibration of the entire Landsat 4, 5, and 7 archive (1982–2010) , 2012 .