FPGA-Based Hardware Simulation of DOA-Estimation via Linear Antenna Arrays Taken into Account the Mutual Coupling

In the paper the problem of designing highly sensitive digital antenna arrays taking into account the mutual influence between elements is studied. Digital hardware model of radio direction-of-arrival estimation system based on digital algorithms have been developed. The electrodynamic model including the mutual coupling of elements of a linear antenna array is used as channel of the DOA-estimator. Microstrip antennas are elements of this array. In the paper the steps of building a functional block model for DOA-estimation is presented. The graphs of the spatial pseudospectrum are obtained which are calculated based on the FPGA-board.