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If the TLE is essential to this, then it should certainly be included in the file -- but should it be just the "string" or should each component be broken out into a separate piece of metadata? Also, the "scanning information" -- is that something that can be quantified for "all" polar satellites? I know that some of these types of things have been discussed on this list (and elsewhere), but I've not seen any consensus...or convergence... Tom Rink pointed out some time ago that for some satellites, the "navigation" is so complex that we users probably will have to settle for getting lat/lon-per-pixel, instead of trying to run the algorithms ourselves. Is that pertinent to this discussion? tom -- Tom Whittaker University of Wisconsin-Madison Space Science & Engineering Center (SSEC) Cooperative Institute for Meteorological Satellite Studies (CIMSS) 1225 W. Dayton Street Madison, WI 53706 USA ph: +1 608 262 2759
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