Angular Resolution of Closely Spaced Signal Sources Using a Two-Dimensional Antenna Array on the Basis of the Minimum-Polynomial Method

2021 ◽  
Author(s):  
V. T. Ermolayev ◽  
A. G. Flaksman ◽  
O. A. Shmonin
Keyword(s):  
Antenna Array ◽  
Angular Resolution ◽  
Polynomial Method ◽  
Two Dimensional ◽  
Signal Sources ◽  
Minimum Polynomial

scholarly journals Experimental research of the angular superresolution of correlated signal sourcesby the minimum polynomial method.

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
I.M. Averin ◽  
◽  
A.V. Elokhin ◽  
A.G. Flaksman ◽  
◽  
...  
Keyword(s):  
Super Resolution ◽  
Angular Distance ◽  
Polynomial Method ◽  
Experimental Conditions ◽  
Mutual Correlation ◽  
Correct Estimation ◽  
Angular Coordinates ◽  
Signal Sources ◽  
Minimum Polynomial ◽  
Root Methods

Experimental results on the super-resolution of two closely spaced signal sources obtained using a car radar of the millimeter wavelength range are presented. The peculiarities of the experimental conditions were a high mutual correlation of signal sources and an extremely short input process, which consisted of only one sample. The estimation of the number of sources was carried out using the method of the minimum polynomial of the correlation matrix of signals in the antenna array, which provided the probability of correct estimation of the number of sources equal to 100% in all scenarios of the signal situation. To find the angular coordinates of the sources, we used the method of scanning the AA beam, the spectral and root methods of the minimum polynomial. Comparative analysis showed that the root method is more efficient and provides resolution of sources in cases of smaller angular distance between them.

scholarly journals Full snapshot reconstruction in hybrid architecture antenna arrays

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Maria Trigka ◽  
Christos Mavrokefalidis ◽  
Kostas Berberidis
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Communication Systems ◽  
Linear Array ◽  
Research Work ◽  
Hybrid Architecture ◽  
Angle Of Arrival ◽  
Music Algorithm ◽  
Array Structures ◽  
Signal Sources

AbstractIn the context of this research work, we study the so-called problem of full snapshot reconstruction in hybrid antenna array structures that are utilized in mmWave communication systems. It enables the recovery of the snapshots that would have been obtained if a conventional (non-hybrid) uniform linear antenna array was employed. The problem is considered at the receiver side where the hybrid architecture exploits in a novel way the antenna elements of a uniform linear array. To this end, the recommended scheme is properly designed so as to be applicable to overlapping and non-overlapping architectures. Moreover, the full snapshot recoverability is addressed for two cases, namely for time-varying and constant signal sources. Simulation results are also presented to illustrate the consistency between the theoretically predicted behaviors and the simulated results, and the performance of the proposed scheme in terms angle-of-arrival estimation, when compared to the conventional MUSIC algorithm and a recently proposed hybrid version of MUSIC (H-MUSIC).

Millimeter-Wave Two-Dimensional Beam-Switchable and Scalable Phased Antenna Array

2021 ◽  
pp. 1-1
Author(s):  
Nai-Chen Liu ◽  
Ching-Cheng Tien ◽  
Chi-Yang Chang ◽  
Hao-Wei Ling ◽  
Chih-Wei Chiu ◽  
...  
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Two Dimensional ◽  
Phased Antenna Array

scholarly journals Application of a two-dimensional Butler matrix antenna array for tile-based beamforming

2019 ◽  
Vol 16 (11) ◽  
pp. 20190272-20190272
Author(s):  
Cheng-Hung Hsieh ◽  
Yi-Ting Lin ◽  
Hsaing-Chieh Jhan ◽  
Zuo-Min Tsai
Keyword(s):  
Antenna Array ◽  
Two Dimensional ◽  
Butler Matrix

Toward 3D passive radar exploiting DVB-T2 transmitters of opportunity

2019 ◽  
Vol 11 (7) ◽  
pp. 577-583 ◽  
Author(s):  
Aleksey Barkhatov ◽  
Evgenii Vorobev ◽  
Vladimir Veremyev ◽  
Vladimir Kutuzov
Keyword(s):  
Experimental Study ◽  
Antenna Array ◽  
Three Dimensional ◽  
Technical Specification ◽  
Third Party ◽  
Passive Radar ◽  
Two Dimensional ◽  
Digital Video Broadcasting ◽  
Video Broadcasting ◽  
3D Localization

This article presents the configuration and technical specification of the passive radar exploiting third-party transmitters of second-generation digital video broadcasting standard DVB-T2 as illuminators of opportunity. The performance of the two-dimensional (2D) passive radar estimated based on theoretical and experimental study is described. The possible configuration of the 2D non-equidistant antenna array for the three-dimensional (3D) passive radar is proposed to ensure the 3D localization of detected targets. The experimental results on drone detection conducted with the 3D passive radar show that the radar with the 2D antenna array is capable to measure not only azimuth but also elevation and consequently target altitude.

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