Radiometric terrain flattening error GRD product of sentinel 1

i have a problem. i downloaded a GRD product of sentinel 1.
i am working on it

i have perform following operation before running terrain correction

  1. Thermal noise removal
  2. Apply Orbit file
  3. Calibration to Beta0
  4. Speckle filtering
  5. Radiometric terrain flattening

Dear Nerissa,

This process is wrong.

You have to do: Apply Orbit file -> Thermal noise removal -> Calibration Beta0 -> RTF -> Spk Filter -> TC

Good luck!