Features of dynamic patterns of cylindrical phased arrays. Abstract

Zhurnal Radioelektroniki - Journal of Radio Electronics. ISSN 1684-1719. 2020. No. 3
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Full text in Russian (pdf)

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DOI 10.30898/1684-1719.2020.3.12

UDC 621.396.67

FEATURES OF DYNAMIC PATTERNS OF CYLINDRICAL PHASED ARRAYS

D. S. Klygach, M. G. Vakhitov, A. B. Khashimov

South Ural State University (National Research University), 76, Lenin av., Chelyabinsk, 454080, Russia Federation

The paper is received on March 3, 2020

Abstract. Methods for operating an uniform scanning in cylindrical phased arrays are in the focus of the paper. Sequential switching of arc arrays as a part of cylindrical array forms a complete sector azimuth directions. It is shown that there is an inequality of the integer number of directions and the ratio between the radiators to a given scan step. Such an inequality leads to the appearance of an undesirable angular interval that is not equal to the scan step. Therefore, such an interval must be compensated for continued uniform scanning. For this, a block of several arc arrays is proposed, the dimension of which fully compensates for the cycle of undesirable intervals. The definition of dynamic pattern of a cylindrical phased array is given. A mathematical model of cylindrical phased array based on rigorous electromagnetic principles has been developed. The use of nontrivial asymptotic correspondence of two-dimensional and three-dimensional electromagnetic problems leads to system of integral equations. We consider the case of E-polarization. The mathematical model makes it possible to consider the features of the dynamic patterns near the phased array. For the diagnosis of faulty elements, a reference dynamic pattern is used. A method is proposed for comparing the measured dynamic pattern with reference one that provides high detection efficiency even with random measurement error.

Key words: dynamic pattern, integral equations, synthesis of discrete phase distributions, diagnosis of defective elements.

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For citation:

Klygach D.S., Vakhitov M.G., Khashimov A.B. Features of dynamic patterns of cylindrical phased arrays. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No. 3. Available at http://jre.cplire.ru/jre/mar20/12/text.pdf

DOI 10.30898/1684-1719.2020.3.12