Random transmission scheme approach for a FMCW TDMA coherent MIMO radar

In this paper the authors analyze the use of Time Division Multiple Access (TDMA) applied to coherent Multiple-Input Multiple-Output (MIMO) radar systems. One of the main limitations in exploiting the orthogonal condition in the time domain for MIMO radars is the reduction of the unambiguous Doppler interval. With respect to frequency modulated continuous waveform (FMCW) systems, the authors present a possible solution which is based on the introduction of a random selection of the active transmitter. The analytical representation of the signal model is described and the simulated results of the proposed approach are shown.