Thank you Dr Andrew Braun.
yes, same polarization but not same IW number can not proceed Dr Braun, is is right?
one more thing,
low coherence will affect interferogram. a lot of site in Indonesia, especially in Aceh Tengah, low coherence is presented due to high vegetation. It means I have to elliminate result of DinSAR and can not use Sentinel data to produce a good interferogram due to atmospheric disturbance.
I read some papers. It is low coherence present but at least unwrapping phase can be proceed to D-InSAR with other sensor such as ALOS.
Sorry out of topic, I should move to another topic, but don't do where to put. just go through my question and answer
Thank you for comment