How to mosaic two radiometric terrain corrected gamma naught image?

I have generated two Gamma naught images. Now I just want to merge them.

please don’t open new topics on random questions. You can find many answers via the search forum or ask questions in already existing topics. This helps to keep the forum clean and structured.

If the images cover the same area, you use the Coregistration tool under Radar > Coregistration
If the images cover adjacent areas, you use the SAR Mosaic tool under Radar > Geometric