Location Estimation Accuracy of Augmented Arrays for Millimeter-Wave FMCW-MIMO Radar

In this paper, we examine the performance of location estimation with various estimation methods for the millimeter-wave frequency modulated continuous wave (FMCW)-MIMO radar. We do not aim for any novel estimation method but evaluate the resolution of angle and distance estimation in great detail through simulation and experiments. We found through our simulation and experimental results that Khatri-Rao (KR) product extension is often effective for the radar and can well improve the accuracy of location estimation. We clarify the properties and drawbacks of the location estimation methods through our simulation and experimental results.