Results 141 to 150 of about 311 (170)
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Improved coprime-like arrays on limited platform
Signal ProcessingZhengchun Zhou, Avik Adhikary
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Gaussian signal detection by coprime sensor arrays
2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2015Coprime sensor arrays (CSAs) achieve the resolution of a fully populated uniform linear array (ULA) with the same aperture using fewer sensors. The conventional CSA product beamformer suffers from a smaller array gain due to the reduced number of sensors.
Kaushallya Adhikari, John R. Buck
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Left-Right ambiguity resolution for coprime sparse arrays
The Journal of the Acoustical Society of America, 2022Coprime Sparse Arrays (CSA) with two collocated uniform linear arrays are used to estimate O(MN) direction of arrivals for a narrow band source with only O(M+N) sensors. The CSA cannot discriminate the azimuth and its complementary angles due to the symmetry along the array-axis.
Baiju M, Nair +3 more
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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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Super Fragmented Coprime Arrays for DOA Estimation
IEEE Signal Processing LettersXiaoguang Leo Liu, Abdul Hayee Shaikh
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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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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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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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