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Coherent wideband DOA estimation of multiple FM signals using spatial time-frequency distributions

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

The previously developed concept of narrowband spatial time-frequency distributions (STFDs) is extended to the wideband case. A new STFD-based root-MUSIC estimator is proposed. This estimator exploits a short-window spatial pseudo Wigner-Ville distribution (SPWVD) to enable application of the subspace-based approach. To combine all relevant SPWVD points, the proposed 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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Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on  (Volume:5 )

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