I am not an expert, but I found a formula on the internet that says that sigma0 and gamma0 are connected by multiplying by a factor depending on the incidence angle. (I will look it up again).
If so and I am interested in the ratio VV/VH could I theoretically use the gamma0 values instead of processing my own sigma0 values? Our approach is based on sigma0 so far, but we got access to gamma0 data that is already processed to the same extent we are interested in, so we would save a lot of time.
Thanks for any help,