Title :
Efficient location of closely spaced wide-band sources
Author :
Giannella, F. ; Schultheiss, P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
Abstract :
The problem of estimating the location of remote, closely spaced sources radiating wideband Gaussian signals is addressed. A novel lower bound on the mean square errors attainable by linearly combining narrowband estimates is derived, and the results are compared with the Cramer-Rao bound for the broadband signal. The bound suggests an incoherent combination of narrow band estimates which comes close to reaching the wideband Cramer-Rao bound
Keywords :
information theory; matrix algebra; parameter estimation; signal processing; broadband signal; closely spaced wide-band sources; mean square errors; narrowband estimates; source location estimation; wideband Gaussian signals; Bandwidth; Concatenated codes; Covariance matrix; Cramer-Rao bounds; Frequency estimation; Mean square error methods; Narrowband; Sensor arrays; Sparse matrices; White noise; Wideband;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.116236
