I made a small experiment to test the value of RTC data :
- Choose a RTC cell with a lot of in-situ site measurements (cell 10SGJ)
- Retrieve backscatter measurements σVV, σVH and local incident angle θ for the 2018 - 2019
- On a selected area, compute median(- log(σ * cos(40°) / cos(θ))))
Here is the selected area :
And here are the results :
Once smoothed and linearly rescaled, σVV gets a RMSE of only 4 which is quite promising ! On the bad news side, Sentinel 1B is malfunctioning (see in the news here) meaning that only Sentinel 1A will be available for the evaluation stage (half the data ).
Hope this can help some of you !