Explain the difference between Raw Landsat 8 DN values and TOA Spectral Radiance values.
Find an area of vegetation on your image and select a single vegetation pixel. Use the Inspector tool to generate the bar chart/numeric values showing the signal at each band
Discuss the differences between the two spectral profiles : what part(s) of the EM spectrum are affected and why?
– What atmospheric attenuation processes are occurring, and are corrected for in the Surface Reflectance image? How do you know?
– Remember that absorption and scattering are wavelength dependent and will be different depending on band)
If you wanted to map a mountainous region, limiting geometric distortions as much as possible, would you choose a satellite-based or aircraft-based scanning system? Explain why in terms of imaging geometry .
