Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2021. No. 2
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DOI https://doi.org/10.30898/1684-1719.2021.2.3

UDC 621.396.6

 

Experimental research of the angular superresolution of correlated signal sources by the minimum polynomial method

 

I. M. Averin, A. V. Elokhin, A. G. Flaksman

 Lobachevsky State University of Nizhny Novgorod, Gagarin prosp., 23, Nizhny Novgorod 603950, Russia

 

The paper was received on February 4, 2021

 

Abstract. 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.

Key words: antenna array, correlation matrix, minimum polynomial, super-resolution, estimate of the number of sources, estimate of angular coordinates.

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For citation:

Averin I.M., Elokhin A.V., Flaksman A.G. Experimental research of the angular superresolution of correlated signal sourcesby the minimum polynomial method. Zhurnal Radioelektroniki [Journal of Radio Electronics]. 2021. No.2. https://doi.org/10.30898/1684-1719.2021.2.3 (In Russian)