I am getting strange image artifacts when I co-register a large stack of Radarsat-2 images. I am using the co-registration module (create stack --> cross-correlate --> warp). I’ve played with some parameters including using the minimum extent of the images present in the stack and the warping functions (cubic, linear etc.) The images are all from the mode/viewing geometry so the co-registration should be fairly straight forward. Does anyone have any suggestions or an explanation for why this may be happening?