motion compensation for range migration algorithm
I have been trying to incorporate MoCo to the extended Omega-k as well following Reigbar's paper (https://ieeexplore.ieee.org/document/1648550). I understand that for the first order MoCo, the range deviation needs to be calculated from a reference range (i.e. image center) and for the second order, the differences between the deviation for all ranges and the deviation for the reference range need to be used. However, calculating the deviation in the above recommended method didn't work for me. Especially, I'm not sure if I calculated the deviation for the second order MoCo right. I used r = (c*fast_time)/2 for calculating all the range positions and then subtracted those from the non-ideal platform positions in order to know their range deviations. Is that correct?

Thank you.