Signal discrimination method based on the estimation of signal correlation using an array antenna

Presently, various algorithms are proposed for array antenna signal processing, but there is a problem that propagation environments often change the characteristics of the algorithms. One of the solutions to this problem is estimating the propagation environment in real time and switching the algorithm depending on it. Therefore, we focused on real time estimation methods of propagation environments. We propose a real time signal discrimination method based on the estimation of signal correlation using an array antenna. This method is a combined method of common DOA estimation using eigenvalue analysis and signal correlation estimation. Comparison with the FFT-MUSIC method in simulations and results of experiments in an anechoic chamber and indoor environment showed the validity of the proposed method.