Abstract
The mean-square error (MSE) of Capon estimate of the directions-of-arrival (DOA) is established in the narrowband array processing case. An improved Capon-like DOA estimator is proposed and its MSE is studied as well. Performance comparisons between the standard and improved Capon DOA estimates, and between these two estimates and the linear prediction DOA estimate, are performed. It is concluded that the improved Capon-like method introduced in this paper provides more accurate DOA estimates in most cases.
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This work has been supported by the Swedish Research Council for Engineering Sciences under contract 91–676.
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Stoica, P., Händel, P. & Söderström, T. Study of Capon method for array signal processing. Circuits Systems and Signal Process 14, 749–770 (1995). https://doi.org/10.1007/BF01204683
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DOI: https://doi.org/10.1007/BF01204683