If you wouldn’t mind, please take a look at this, maybe you can elaborate it better.
After (Ferretti et .al 2007a) InSAR principles-guidelines for SAR interferometry processing and interpretation, vol. 19, They said the atmospheric phase contribution is within 2pi peak-to-peak phase change
Does that mean the maximum interferometric phase change caused by atmospheric phase delay equal to 2pi, or did I understand this passage wrong ?