My apologies for the delay. After many tests I have figured out what was causing the problem.
During co-registration (ProductSetRead --> CreateStack --> CrossCorrelation --> Warp --> Write) I had the following parameters in CreateStack:
extent: Minimum
resamplingType: NEAREST_NEIGHBOUR
initialOffsetMethod: Orbit
I think the resampling caused this issue because once I selected the extent to be “Master”, and no resampling was done, the stripes went away. It makes sense to me that resampling would cause some problems for InSAR calculations. As a result if I may suggest that a minimum extent option without resampling is implement. For example, there could be an extra option where the images are stacked to the master extent but then the final stack is clipped to the minimum extent.
Thank you for your help, hope this is useful to someone!
