A Real-Valued Direction-of-Arrival Estimation Method Based on Subspace Approximation
نویسندگان
چکیده
In this paper, a completely real-valued approach for direction finding is developed. The proposed algorithm using high order powers of the sample covariance matrix to approximate the noise subspace in the real domain, so that the computational burden is substantially reduced and the number of incident sources is not required. Numerical simulation results demonstrate the satisfying performance of the proposed method under various scenarios with uncorrelated or pairwise correlated signals. Streszczenie. W artykule przedstawiono metodę wyznaczania kierunku, której działanie opiera się na wyznaczaniu wysokich potęg macierzy kowariancji próbki, w celu aproksymacji podprzestrzeni zakłóceń w dziedzinie rzeczywistej. Pozwala to na redukcję obciążenia obliczeniowego. Nie jest wymagana informacja o ilości źródeł. Przedstawiono wyniki symulacji numerycznych, weryfikujące skuteczność proponowanej metody. (Metoda wartości rzeczywistych estymacji kierunku w oparciu o aproksymację podprzestrzeni).
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