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In this paper, we consider the direction-of-arrivals (DOAs) estimation of coherent narrowband signals impinging on an arbitrary linear array in a computational efficient way. A new interpolation transform based modified Capon beam-forming method is proposed without eigendecomposition, where the arbitrary linear array is transformed to a virtual uniform linear array (ULA) by utilizing the interpolation...
In this paper, we address with the problem of detection the number of narrowband signals impinging on a uniform linear array (ULA) in the presence of multipath propagation. Firstly, by forming a differencing matrix from the array covariance matrix to eliminate the effects of uncorrelated incident signals and additive noises, a combined matrix is constructed from this differencing matrix to decorrelate...
In this paper, an effective direction-of-arrival (DOA) estimation method is proposed with a uniform linear array (ULA) when uncorrelated and coherent signals coexist. The direction-of-arrivals (DOAs) of uncorrelated signals and coherent signals are estimated in two steps. The DOAs of uncorrelated signals are estimated using conventional subspace method firstly, then the information of the uncorrelated...
This paper deals with the problem of estimating the number of mixed narrowband signals of uncorrelated and coherent signals impinging on the L-shaped sensor array, which is structured by two uniform linear arrays (ULAs). Since the total number of incident signals can be estimated as the rank of a combined matrix formed from the cross-correlations between the received data of two ULAs, and the number...
In order to mitigate the effect of additive noises and reduce the computational burden, we propose a new computationally efficient cross-correlation based two-dimensional (2-D) direction-of-arrivals (DOAs) estimation (CODE) method for noncoherent narrowband signals impinging on the L-shaped sensor array structured by two uniform linear arrays (ULAs). By estimating the azimuth and elevation angles...
This paper addresses the problem of estimating the two-dimensional direction-of-arrival (2D DOA) of multiple narrowband signals impinging on an L-shaped array, which is structured by two uniform linear arrays (ULAs). A computationally efficient method without eigendecomposition is proposed, where the elevation angles are estimated from the cross-correlation matrices between the received data of two...
This paper deals with the problem of estimating of the number of coherent narrowband signals impinging on the L-shaped sensor array, which is composed of two uniform linear arrays (ULAs) connected orthogonally at the one end of each ULA. An efficient detection method is proposed for the incident signals without the computationally burdensome eigendecomposition, where the number of incident signals...
In this paper, a new method is proposed for two-dimensional (2-D) direction-of-arrivals (DOAs) estimation of multiple narrowband coherent signals impinging on an L-shaped sensor arrays structured by two uniform linear arrays (ULAs). The coherency of incident signals is decorrelated through subarray averaging technique, and the null space is obtained through linear operator of the cross-correlation...
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