This chapter mainly focuses on the non-ideal motion error estimation and compensation in real SAR data GMTIm. The existing GMTIm algorithms have been proved valid and effective in simulations, but in real data processing, their performances are degraded. It indicates that there are non-ideal motion errors that must be compensated in the real data processing.

Two sorts of non-ideal motion errors have been analyzed, and the estimation and compensation algorithms have been presented. Simulations and real data have been utilized to prove the effectiveness of the algorithms.

The main contribution of this chapter is to analyze the impact of the Doppler centroid error on the imaging of moving targets. This research is still on the exploratory stage, while it appears to be inspirational in the GMTIm with real SAR data. Along with following researches, there may be other non-ideal errors, and the GMTIm of real SAR data will be further improved.


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