DInSAR analysis

I use three SLC data as below for DinSAR analysis.


The result of A&B and B&C shows reverse fringe pattern.

According to GNSS data, this is impossibe and the result shows same fringe pattern.

Is it bag ?

Did you check the all SLC data before processing. Why did you chose B SLC as a master? You should use stack overview, it may help to you.