Synthetic aperture radar out of slant plane motion compensation

Compensation of out of slant plane motion for synthetic aperture radar systems is essential for fine resolution focused imagery. It is shown that a time domain approach, that corrects the phase of each range bin, is equivalent to the polar format processing approach of projecting the range spectral data onto the ground focusing plane, with the two motion compensation approaches linked by a Fourier transform. It is also shown that these methods are equivalent to the spectral shift identified in multiple pass interferometric data.