Phase to Displacement Units?

[ABraun]

There is not just one formula, many approaches exist.
Please see here:

Phase Unwrapping to Vertical Displacement

according to my understanding, the equation is just approximating the vertical elevation change. In fact, it is still largely representing the change of surfaces along the line of sight. There is no simple way retrieving it from a single InSAR image pair (confirmed by mengdahl here). johngan nicely explained the difference here. A comparison between the formula and the phase to displacement module is given here - they are nearly the same. This was discussed this in several topics: Differen…