Results 141 to 150 of about 323 (173)
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Direction-of-Arrival Estimation for Coprime Array via Virtual Array Interpolation
IEEE Transactions on Signal Processing, 2018Coprime arrays can achieve an increased number of degrees of freedom by deriving the equivalent signals of a virtual array. However, most existing methods fail to utilize all information received by the coprime array due to the non-uniformity of the derived virtual array, resulting in an inevitable estimation performance loss. To address this issue, we
Zhiguo Shi, Guoqiang Mao, Yimin D. Zhang
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Coprime Array Design with Minimum Lag Redundancy
ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019In this paper, we propose a new sparse coprime array design that achieves a higher number of degrees-of-freedom for direction-of-arrival (DOA) estimation. The proposed array design completely avoids lag redundancies between the two constituting subarrays of the coprime array, thus achieving the maximum number of unique correlation lags under the ...
Ammar Ahmed +2 more
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Sampling with semi-coprime arrays
The Journal of the Acoustical Society of America, 2018This research introduces a new array geometry called Semi-Coprime Array (SCA) that has the potential to significantly increase the degrees of freedom of a Uniform Linear Array (ULA). An SCA interleaves three ULAs (Subarray 1, Subarray 2, and Subarray 3). Each SCA has two underlying coprime integers (M and N).
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DOA Estimation based on the Optimized Coprime Array Configuration
IEEE Access, 2019 In this paper, a direction-of-arrival (DOA) estimation based on the optimized coprime array (OpCA) configuration is proposed. The proposed array, utilizing the two constituting subarrays N-array and M-array of the coprime array, where their sensors are N and 2M, respectively, shifts all the sensors of the M-array by a specific displacement amount Ls ...
Xiangyu Yu, Ahmed M A Shaalan
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Coprime arrays in the context of compressive sensing
The Journal of the Acoustical Society of America, 2013Arising naturally from the formalism of coarrays, coprime arrays offer a means of achieving sparsity along an array while maintaining certain measures of performance. This configuration offers benefits over traditional configurations for large aperture towed arrays in the ocean environment, but shallow water propagation complicates the wide sense ...
Andrew T. Pyzdek, R. Lee Culver
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Investigations on n-tuple coprime arrays
The Journal of the Acoustical Society of America, 2018Coprime arrays so far combine two sparsely-spaced subarrays, undersampled by factors of M and N, in order to achieve MN degrees of freedom. To ensure that the grating lobes of each subarray can be largely eliminated, M and N must be coprime. In number theory, sets of pairwise coprime numbers can exceed just two numbers.
Dane R. Bush, Ning Xiang
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Detection performance of coprime sensor arrays
The Journal of the Acoustical Society of America, 2013Coprime sensor arrays (CSAs) achieve the resolution of a fully populated uniform linear array (ULA) with the same aperture using fewer sensors. The CSA's reduced number of sensors diminishes its ability to attenuate white noise, and consequently also reduces its array gain. Assuming narrowband independent signal and white noise, when the signal and the
Kaushallya Adhikari, John R. Buck
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Deconvolved Conventional Beamforming for a Coprime Array
OCEANS 2019 - Marseille, 2019Coprime Sensor Array (CSA) has received a lot of attentions recently due to "coprime" nature of the array configuration, which yields a high resolution using product processing with fewer sensors, similar to that of a uniform liner array (ULA) of a larger aperture using conventional beamforming (CBF), with more sensors. Compared with the ULA, CSA yield
Zhengzheng Ye, T.C. Yang
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Universal Hole-Filling Strategies for Coprime Arrays
IEEE Transactions on Signal ProcessingCoprime arrays (CAs) are found to be captivating for striking a balance among the increased number of degrees of freedom (DOFs), reduced mutual coupling and applicable aperture. However, holes in the difference co-array (DCA) reduce the achievable number of DOFs, and further restrict the complete utilization of the aperture.
Xiang Li 0034 +6 more
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DECOM: DOA estimation with combined MUSIC for coprime array
2013 International Conference on Wireless Communications and Signal Processing, 2013In this paper, we propose a direction-of-arrival (DOA) estimation method by combining multiple signal classification (MUSIC) of two decomposed linear arrays for the corresponding coprime array signal processing. The title “DECOM” means that, first, the nonlinear coprime array needs to be DECOMposed into two linear arrays, and second, Doa Estimation is ...
Chengwei Zhou +3 more
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