Coherent resampling for coherent MIMO radar setups

During the recent decade, coherent MIMO radar systems have been examined intensively. Although well proven conventional modulation schemes can be applied to coherent MIMO radars, such as linear frequency modulation (LFM), the system implementation, and therefore also the modulation, usually underlies errors such as non-linearities, phase noise etc. Nevertheless, the academic world in turn has developed methods for calibration, correction and error prediction against corrupted radar signal modulation. One of these methods is the so-called resampling method which had been developed for correction of linear frequency modulation. However, the convolution operation in coherent MIMO radars with collocated antennas incorporates another grade of complexity. This paper sketches the efforts needed, as well as results, for the resampling method applied to coherent MIMO radars with respect to maintenance of coherency between single MIMO channels.