Spatio-Temporal Weighting for High Resolution Direction-of-Arrival Estimation (Rums-Tidsviktning foer Hoegupploesande Estimering av Ankomstriktning)

摘要

A new spatio-temporal weighting scheme for high resolution direction-of-arrival (DOA) estimation of narrow-band, possibly multi-frequency, signals is proposed. It works on correlation data rather than directly on output data, as in the beamspace methods, and incorporates forward-backward smoothing. By using a band-Toeplitz structure on the weighting matrix, it is possible to equivalently represent the effect of the weighting applied to the signal output correlation matrix as a weighting directly on the source correlation matrix. Numerical simulations are provided to illustrate the advantages with the proposed scheme.