Convert the phase to Displacement Before any projection process.
Before converting i have done Range Doppler Terrain Correction----> Snaphu export------->Unwrapping------>Snaphu Import------> Unwrapped image
This unwrapped image i have try to use phase to displacement. For that iam getting that type of error.
When you implemented Range Doppler Terrain Correction that’s mean you haven’t any phase to Unwrap So the right steps are in the following link Big bang in Italy
Now its working well. Thank you so much.