GAGE Short Course: InSAR Theory and Processing August 12-16, 2019 Boulder, CO More at: www.unavco.org/education/professional-development/short-courses/2019/insar-theory-processing/insar-theory-processing.html
SAR can be performed in a "stop and hop" fashion, so the doppler shift due to the motion of the antenna does not have anything to do with cross range resolution.