I was wondering if you can help me find out how I can find the noise floor and remove it from my Radarsat observations.
I think the radiometric calibration in Tools menu only transform the values to db and noise floor is not removed. I looked at metadata info and couldn’t find noise floor variable, however in the RADARSAT2 product information document, this variable has been represented and I found a few papers that corrected this noise (just mentioned!).
So you think thermal noise reference is applied in Beta0 and Sigma0. Can you please direct me to a reference that shows the different processes applied to each product?
Do you think thermal noise is the same as noise floor? Do you know where can I find noise level (any of those!) in the metadata?