The most difficult part of the problem is related to the coupling between the azimuthal compression and the orbital parameters. In the old days when the satellite orbits were not known very accurately, one would use techniques such as clutterlock and autofocus to derive the orbital parameters from the data

DopplerCenterEstimation_MID.m
DopplerCenterEstimation_MID_jie.m
DopplerCenterEstimation_MID_throw.m
DopplerCenterEstimation_Min.m
DopplerCenterEstimation_Ape.m
DopplerCenterEstimation_Eny.m
DopplerCenterEstimation_lyp.m
DopplerCenterEstimation_Max.m

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