Landsat Missions
Definitive Ephemeris is used for geometrically correcting Landsat data, and provides improved accuracy over predicted ephemeris. More details on Definitive Ephemeris can be found at http://landsat.usgs.gov/what_is_definitive_ephemeris.php.
Definitive Ephemeris files are available two days after acquisition, and can be accessed by choosing one of the options below:
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://landsat.usgs.gov
Page Contact Information: Ask Landsat
Page Last Modified: 08/12/11 09:48 am
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