New answers tagged satellite
The DOS methods are for atmospheric correction only, not radiometric correction. The i.*.toar modules allow you to combine in one step radiometric correction with some additional DOS atmospheric correction method. The input to the i.*.toar modules is the original DN values. The default to i.*.toar is "uncorrected", so normally you would use i.*.toar to get ...
Landsat satellite is the best one because it can be used even for near infrared light
Which satellite? Landsat 8 for example: see the bottom bit here http://landsat.usgs.gov/Landsat8_Using_Product.php
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