In this paper, the effect of spatial smoothing (Forward smoothing and Forward-Backward smoothing) on the performance of subspace methods in the presence of Array Model errors for Direction-Of-Arrival (DOA) estimation is studied. Theoretical expressions for the Mean Squared Error (MSE) in DOA are obtained, based on a common framework of analysis. Simulations… (More)
A New efficient Dual –tone Multyfrequency detection scheme based on Goertzel's algorithm is presented. Evaluating it with two existing detection schemes for DTMF signal corrupted by random noise and variation in frequency proves the merits of the proposed scheme.