tr2.md

@@ -6,23 +6,34 @@
 
 # TOArad2TOAref
 
-transforms TOA radiance to TOA reflectance
-
-
+Transforms TOA radiance to TOA reflectance
 
 # Input
 
 - L1B data
-- Sun earth distance  or date
-- Solar zenith angle or position+date
-
+- Solar irradiance spectrum
 
 # Output
 
-- TOAreflectance (overwritten)
+- TOAreflectance (L1B overwritten data cubes)
+- Log file / Error message?
+
 
 # Memory Budget
+- < 2 MB
 
 # Necessary Functions
 
+- Sun-earth distance (day, month, year)
+- Spectral resampling (spectrum, SRFs, spectral smile)
+
 # Process Work Flow 
+
+- Calculate sun-earth distance
+- Spectral resampling of solar spectrum for each image cokumn using valid SRFs and spectral smile.
+- Transformation to TOA reflectance using sun-earth-distance, solar irradiance spectraum and solar zenith angle.
+
+# Testing
+
+- Input L1B:
+- Reference: