Early results on the characterization of the Terra MODIS spatial response

Francisco Rojas, Robert A. Schowengerdt, Stuart F. Biggar

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


A project to characterize the Moderate Resolution-Imaging Spectroradiometer (MODIS) spatial response (SR) using preflight Modulation Transfer Function (MTF) validation data and on-orbit imagery is described, and the results from the analyses are presented. The preflight validation data are used to estimate the optical blurring parameters to complete a system MTF model for MODIS bands 1 and 2. The model and data indicate that the prelaunch MTF is higher for band 2 than for band 1. The on-orbit imagery is used in a two-image MTF estimation technique to characterize the on-orbit MTF for MODIS bands 1 and 2. Three data sets coincident with MODIS collects are used, Landsat-7 ETM+ imagery of Maricopa Agricultural Center, Arizona, on September 26, 2000 and May 24, 2001 and ASTER imagery of Mono Lake, CA, on September 29, 2000. The on-orbit MTFs obtained to date are consistent with prelaunch validation MTF measurements in the cross-track direction, but are less than prelaunch MTFs in the in-track direction. Further analysis is in progress to confirm these results.

Original languageEnglish (US)
Pages (from-to)50-61
Number of pages12
JournalRemote Sensing of Environment
Issue number1-2
StatePublished - Nov 2002

ASJC Scopus subject areas

  • Soil Science
  • Geology
  • Computers in Earth Sciences


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