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Wideband direction-of-arrival estimation of multiple chirp signals using spatial time-frequency distributions

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2 Author(s)
Gershman, A.B. ; Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada ; Amin, M.G.

The recently developed concept of narrowband spatial time-frequency distributions (STFDs) is extended to the wide-band case. A new STFD-based wideband root-MUSIC estimator is proposed. This technique employs an extended coherent signal-subspace (CSS) principle involving coherent averaging over a pre-selected set of time-frequency points rather than the conventional frequency-only averaging procedure.

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Signal Processing Letters, IEEE  (Volume:7 ,  Issue: 6 )