We investigate a phase-coded multiple-input multiple-output (MIMO) radar approach which uses concatenated codes based on Hadamard matrices and almost-perfect autocorrelation sequences (APASs). Due to the structure of concatenated codes, the implementation of the correlators can be realized with a favorable small number of taps compared to the overall sequences length. However, these type of sequence set has also some limitations, which we address in this contribution. Therefore, we point out how to manage these imperfections based on numerical simulations and measurements, which we carried out using a software defined radar (SDR) platform with 16 MIMO channels at 77 GHz.
Forschungs-