Bearing estimation for a distributed source via the conventional beamformer

R. Raich, J. Goldberg, H. Messer

פרסום מחקרי: תוצר מחקר מכנסהרצאהביקורת עמיתים

תקציר

This paper considers the performance of the conventional beamformer (BF) for estimating the bearing of a single, far-field, narrow-band, spatially distributed source with an array of passive sensors. The BF offers significant computational advantage compared to the (asymptotically optimum) maximum likelihood estimators (MLE's) which require searches over some multi-dimensional parameter space. However, the price to be paid for such a reduction in computational complexity is a degradation in performance compared to that of the MLE's. This paper studies the nature of this degradation for 'coherently' and 'incoherently' distributed sources as a function of key scenario parameters such as signal-to-noise-ratio (SNR), mean angle, spatial spreading of the source, and number of sensors, both mathematically and by simulations.

שפה מקוריתאנגלית
עמודים5-8
מספר עמודים4
סטטוס פרסוםפורסם - 1998
פורסם באופן חיצוניכן
אירועProceedings of the 1998 9th IEEE SP Workshop on Statistical Signal and Array Processing - Portland, OR, USA
משך הזמן: 14 ספט׳ 199816 ספט׳ 1998

כנס

כנסProceedings of the 1998 9th IEEE SP Workshop on Statistical Signal and Array Processing
עירPortland, OR, USA
תקופה14/09/9816/09/98

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