Effects of nonzero bandwidth on direction of arrival
نویسندگان
چکیده
The authors consider the impact of a small but nonzero bandwidth on narrowband direction-of-arrival (DOA) estimation using an array of sensors. They derive expressions for the DOA error for three commonly used array processing algorithms: MUSIC, ESPRIT and weighted subspace fitting (WSF). The error expressions are found by a perturbation analysis of these algorithms for small relative bandwidths of the sources. The perturbation-based error predictions are compared to the exact deviation for some special cases of interest.
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