TY - JOUR
T1 - Early results on the characterization of the Terra MODIS spatial response
AU - Rojas, Francisco
AU - Schowengerdt, Robert A.
AU - Biggar, Stuart F.
N1 - Funding Information:
This research is sponsored by NASA grant number NAG5-6339. The authors are grateful for the cooperation of Farida Adimi and Harry Montgomery of the MODIS Characterization Science Team (MCST) in supplying extensive prelaunch data sets, Bruce Guenther of MCST for continuing support, and Dr. Gerry Godden, now deceased, for stimulating and productive discussions on the more esoteric details of the MODIS system. We also wish to acknowledge assistance from Jim Storey, Raytheon ITSS, on the parametric modeling of MODIS and his direction in using the MODIS and ETM+/ASTER geolocation data.
PY - 2002/11
Y1 - 2002/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0036847279&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036847279&partnerID=8YFLogxK
U2 - 10.1016/S0034-4257(02)00086-X
DO - 10.1016/S0034-4257(02)00086-X
M3 - Article
AN - SCOPUS:0036847279
SN - 0034-4257
VL - 83
SP - 50
EP - 61
JO - Remote Sensing of Environment
JF - Remote Sensing of Environment
IS - 1-2
ER -