# motion compensation for range migration algorithm

Is there a simple to follow explanation of how to do second order motion compensation for range migration algorithm?

The one described in Carrara et al is for the ideal case. For the Extended Omega K algorithm, how does one relate the deviation in platform position to the amount of phase compensation to apply in terms of kx? Is it a scaling by $2\pi/\delta x$ where $\delta x$ is the deviation along the azimuth, and the slant range deviation is assumed to have been compensated away via a mix of phase compensation and/or interpolation and/or pixel shifts?