Results 141 to 150 of about 3,462 (189)

Unitary Esprit for Coprime Arrays

ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023
Coprime arrays are normally used to identify more sources than sensors, using the coarray domain. They can also be used directly in element-space and still have benefits of better accuracy and resolution compared to ULAs. An invariance is buried in each of the two sparse ULAs which constitute a coprime array. In this paper, ESPRIT is applied separately
Chen, Po-Chih, Vaidyanathan, P. P.
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Left-Right ambiguity resolution for coprime sparse arrays

The Journal of the Acoustical Society of America, 2022
Coprime 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, Rubin Jose, Peter, Arun, Kumar, Rajendar, Bahl   +3 more
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Generalized Thinned Coprime Array for DOA Estimation

ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2021
Owing to the large degrees of freedom and reduced mutual coupling by producing difference coarrays, nonuniform linear arrays have aroused great interest in direction of arrival (DOA) estimation. Previous works have presented some new sparse arrays, such as the thinned coprime array.
Junpeng Shi, Yongxiang Liu, Fangqing Wen, Zhen Liu, Panhe Hu, Zhenghui Gong   +5 more
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Sparse sensing with coprime arrays

2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers, 2010
Coprime sampling has, in the past, been used for signal processing applications such as range and doppler improvement in radar, and for identifying sinusoids in noise. This paper considers a coprime pair of samplers in space or time from the point of view of the difference coarray, which is key to the increased freedom available for processing with ...
P. P. Vaidyanathan, Piya Pal
openaire   +1 more source

Multiplicity of coprime pairs for extension of coprime sensor arrays

The Journal of the Acoustical Society of America, 2019
This research finds the optimum period of a basic coprime sensor array (CSA) needed to reduce the PSL height to -13 dB for both minimum and product processing methods. Our design does not have the constraint that the subarray lengths be one integer apart unlike in [Adhikari et al., 2014].
Pablo Johnson, Daniel Sartori, Tyler Trosclair, John Willis, Kaushallya Adhikari   +4 more
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Investigations on n-tuple coprime arrays

The Journal of the Acoustical Society of America, 2018
Coprime 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, 2013
Coprime 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
openaire   +1 more source