Corregistrated slave images with gray stripes

Hi everyone. I have a question and maybe anyone can help me. I maked a preprocessing and corregistration of some sar images. However, at the end, the slave images presented the appearance of corrugated gray stripes. One of the figures with the gray stripes is shown below.

Thanks a lot and best regards

I had this once and if I remember it correctly it was caused by the polynomial order in the warp step or the interpolation method.
Try to change one of these parameters and see if the result changes.

Edit: Can you exclude the case tha the stripes were alreay in your input product?

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Thanks a loot