Ground-reference calibration of Landsat-7 ETM+

K. J. Thome, J. H. LaMarr, S. F. Biggar, A. S. Lopez

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


Ground-reference techniques for the Enhanced Thematic Mapper Plus (ETM+) on Landsat 7 are described. The techniques are similar to those used for many years for Landsat-5 Thematic Mapper (TM). Recent results with the Landsat-5 TM are presented, including comparisons with hyperspectral, airborne imaging data. These results show that the Landsat sensor has remained stable within the 5% uncertainty of the ground-reference methods for the last five years. The airborne imagery is also used to show uncertainties due to registration errors, spectral differences, and spatial resolution differences in cross-comparison techniques planned for Earth Observing System sensors. In addition to the use of the traditional methods and test sites, a smaller test site local to the University of Arizona area is being evaluated for use with ETM+. This site, while not as bright, spatially-uniform and large as typical sites, allows more frequent calibrations and hopefully a better understanding of the calibration as a function of time. The selection of the test site, its properties, and example results of calibration of Landsat-5 TM are presented.

Original languageEnglish (US)
Pages (from-to)234-242
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1999
EventSensors, Systems, and Next-Generation Satellites III - Florence, Italy
Duration: Sep 20 1999Sep 23 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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