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Revision as of 19:43, 4 February 2005 (edit)
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(Refer to NOSA)
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(About LandSat7 data)
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====About LandSat7 data==== ====About LandSat7 data====
-It is incredible that it is as good as that. Landsat7 only gets one chance every +It is incredible that it is as good as that. Landsat7 only gets one chance every
-16 days, at about 10AM, to cover any given area. If there are clouds, fog, smog, +16 days, at about 10AM (???), to cover any given area. If there are clouds, fog, smog,
snow on the ground (too white), too much grass on the ground (too green), too snow on the ground (too white), too much grass on the ground (too green), too
low or too high sun angle (low contrast), satellite maintenance, solar storm ..., low or too high sun angle (low contrast), satellite maintenance, solar storm ...,
that chance is lost. A few bad takes in a row, and a whole year is lost. that chance is lost. A few bad takes in a row, and a whole year is lost.
-A scene is 160x180KM, and a perfect scene has to have perfect conditions+A scene is 160x180km, and a perfect scene has to have perfect conditions
for the whole area. for the whole area.
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available on the net makes them even more significant. available on the net makes them even more significant.
-LandSat7 resolution is 15 meters per pixel+LandSat7 resolution is 15 meters per pixel.
====NASA OPEN SOURCE AGREEMENT VERSION 1.3==== ====NASA OPEN SOURCE AGREEMENT VERSION 1.3====
See [[NOSA]] for the full NASA Open Source Agreement See [[NOSA]] for the full NASA Open Source Agreement

Revision as of 19:44, 4 February 2005

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