24 August 2009 Trends in MODIS geolocation error analysis
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Abstract
Data from the two MODIS instruments have been accurately geolocated (Earth located) to enable retrieval of global geophysical parameters. The authors describe the approach used to geolocate with sub-pixel accuracy over nine years of data from MODIS on NASA's EOS Terra spacecraft and seven years of data from MODIS on the Aqua spacecraft. The approach uses a geometric model of the MODIS instruments, accurate navigation (orbit and attitude) data and an accurate Earth terrain model to compute the location of each MODIS pixel. The error analysis approach automatically matches MODIS imagery with a global set of over 1,000 ground control points from the finer-resolution Landsat satellite to measure static biases and trends in the MODIS geometric model parameters. Both within orbit and yearly thermally induced cyclic variations in the pointing have been found as well as a general long-term trend.
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R. E. Wolfe, R. E. Wolfe, Masahiro Nishihama, Masahiro Nishihama, } "Trends in MODIS geolocation error analysis", Proc. SPIE 7452, Earth Observing Systems XIV, 74520L (24 August 2009); doi: 10.1117/12.826598; https://doi.org/10.1117/12.826598
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