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Proceedings Paper

Trends in MODIS geolocation error analysis
Author(s): R. E. Wolfe; Masahiro Nishihama
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Paper 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.

Paper Details

Date Published: 24 August 2009
PDF: 7 pages
Proc. SPIE 7452, Earth Observing Systems XIV, 74520L (24 August 2009); doi: 10.1117/12.826598
Show Author Affiliations
R. E. Wolfe, NASA Goddard Space Flight Ctr. (United States)
Masahiro Nishihama, NASA Goddard Space Flight Ctr. (United States)
Sigma Space Corp. (United States)


Published in SPIE Proceedings Vol. 7452:
Earth Observing Systems XIV
James J. Butler; Xiaoxiong Xiong; Xingfa Gu, Editor(s)

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