Joint frequency and DOA estimation for multiple sources using co-prime array
As the work frequency band gradually increases,the traditional joint estimation methods of carrier frequency and direction of arrival(DOA)of multi-band signal based on spatial-temporal Nyquist sampling are re-stricted by array aperture and sampling rate.Therefore,a cross-shaped spatial-temporal sub-sampling receiver based on co-prime array is proposed.Further,an analytical method is developed via combining noise subspace construction and correlation based source pairing.Owning to that the sparse array can effectively expand the array aperture,the proposed method achieves obvious performance improvement under the equal hardware resources and signal-to-noise(SNR)conditions compared with the traditional method based on uniform linear array(ULA).
joint frequency and direction of arrival(DOA)estimationco-prime arraysspatial sub-sam-plingtemporal sub-sampling
NETL
NSTL
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