Tops Merge gives value jumps

[PaulSAR]

Hi everyone!

I’m working with SLC IW and dual-polarimetric data (VV and VH as it’s in the Arctic region). My region of interest lies between two swaths in the same image, so I’ve been using TOPS merge. I can see in the the HV channel that there is a clear line with a jump of values between the two different swath (in the image below). This also doesn’t seem to happen in the VV channel.

Here is the graph I have used to get to the result:

Do you know if I missed a step to ensure continuity in these values, or should I handle the data differently?

Thanks,
Paul

[PaulSAR]

I found that these stripes between swaths are probably due to thermal noise, and not to the tops merge operation from this post:

SLC- removes lines between adjacent sub-swath

Hello I am a novice trying Sentinel-1 SLC. There is a distinct line between adjacent subbands, and the range direction data appears to fluctuate (As shown in picture). How can I remove this stripe to produce a smooth image, Please help me!! thank you [d3157a114b3f40e338846d39915dedf] [dfe9fff381614db62c4bd75bc7d8d94] [fde449952273b55bf6a33bdbd5506e1]

Since the thermal noise removal step also removes slc phase information, I imagine that it cannot be corrected when working with the C2 polarimetric matrix.