Comparison of 2D and 3D Compressed Sensing for High-Resolution TDM-MIMO Radars

In order to enhance the resolution of radar sensors, the sampling of the different measurement domains range, Doppler, and direction-of-arrival can be improved. This, for example, leads to the application of a sparse array for an increased angular resolution and an enhanced multiple-input multiple-output switching scheme for an increased maximum Doppler velocity. In this paper, an investigation is performed in order to determine the dimension where undersampling is most effective. As the measurement dimensions are linked, two different reconstruction approaches of the subsampled data are presented and evaluated. Measurements validate the effective reconstruction of the subsampled data.