Results 21 to 30 of about 751,749 (193)

Low-Complexity DOA Estimation Method Based on Joined Coprime Array [PDF]

Journal of Telecommunications and Information Technology
In this article, the elimination of ambiguity of a joined coprime array has been examined, with a focus on such of its properties as large aperture size and complete degree of freedom (DOF).
Fatimah Salman, Bayan Sabbar
doaj   +2 more sources

A Hole-free Shifted Coprime Array for DOA Estimation [PDF]

Journal of Telecommunications and Information Technology
Coprime arrays have recently become a popular trend in estimating the direction of arrival in array signal processing, as they increase the degree of freedom (DOF).
Fatimah Abdulnabi Salman, Bayan Mahdi Sabbar   +1 more
doaj   +3 more sources

Off-grid hydroacoustic signal orientation estimation based on interpolation and subspace fitting in coprime arrays. [PDF]

PLoS ONE
This letter presents a novel approach to sparse Bayesian underwater acoustic signal direction estimation. The proposed method incorporates interpolation of the coprime array and signal subspace fitting.
Chuanxi Xing, Guangzhi Tan, Qiang Meng, Yanling Ran, Mao Lu   +4 more
doaj   +2 more sources

Enhanced Array Synthesis and DOA Estimation Exploiting UAV Array with Coprime Frequencies

Drones
The challenge of achieving high-precision direction-of-arrival (DOA) estimation with enhanced degrees of freedom (DOFs) under a limited number of physical array elements remains a critical issue in array signal processing.
Long Zhang, Weijia Cui, Nae Zheng, Song Chen, Yuxi Du   +4 more
doaj   +2 more sources

Computational Ghost Imaging Based on Light Source Formed by Coprime Array. [PDF]

Sensors (Basel), 2020
In computational ghost imaging, a spatial light modulator (SLM) can be used to modulate the light field. The relative locations and the number of light point pixels on an SLM affect the imaging quality.
Zhan Y, Liu J, Wang Z, Yu Q.
europepmc   +2 more sources

Structured autocorrelation matrix estimation for coprime arrays [PDF]

Signal Processing, 2021
A coprime array receiver processes a collection of received-signal snapshots to estimate the autocorrelation matrix of a larger (virtual) uniform linear array, known as coarray. By the received-signal model, this matrix has to be (i) Positive-Definite, (ii) Hermitian, (iii) Toeplitz, and (iv) its noise-subspace eigenvalues have to be equal.
Dimitris G. Chachlakis, Panos P. Markopoulos   +1 more
openaire   +2 more sources

COPRIME ARRAY PARAMETERS OPTIMIZATION FOR DOA ESTIMATION

Iraqi Journal of Information & Communication Technology, 2021
Sparse array such as the coprime array is one of the most preferable sparse arrays for direction of arrival estimation due to its properties, like simplicity, capability of resolving more sources than the number of elements and resistance to mutual ...
Fatimah A. Salman, Bayan M. Sabbar
doaj   +1 more source

Direction of Arrival Estimation Algorithm Based on Coprime Array [PDF]

Hangkong bingqi, 2023
The coprime array has attracted extensive attention because of its flexible antenna placement form and larger array aperture compared with the uniform array, which can obtain higher degrees of freedom and reduce the cost of hardware resources.
Liu Jianing, Si Weijian
doaj   +1 more source

Array gain of coprime arrays [PDF]

The Journal of the Acoustical Society of America, 2019
A coprime array of M + N − 1 elements is designed, using product processing (PP), to yield the same beam width as that of a full array of MN elements using conventional beamforming (CBF), while at the same time suppressing the grating lobes. The array gain (AG) for isotropic noise using conventional PP is slightly less than that obtained using CBF ...
T C, Yang, Zhengzheng, Ye
openaire   +2 more sources

Enhanced CACIS configuration for direction of arrival estimation

Electronics Letters, 2022
In this letter, an enhanced coprime array with compressed inter‐element spacing is designed for direction of arrival estimation. First, we analyse and conclude that the 0th sensor of coprime array with compressed inter‐element spacing is redundant for ...
Yule Zhang, Guoping Hu, Fei zhang, Hao Zhou   +3 more
doaj   +1 more source