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EFFICIENCY OF SPATIAL SIGNAL PROCESSING UNDER THE INFLUENCE OF ELEMENT MUTUAL IMPEDANCES IN ANTENNA ARRAY

Yu. N. Parshin, PhD (technical sciences), full professor, Head of department, RSREU; This email address is being protected from spambots. You need JavaScript enabled to view it.
S. I. Gusev, PhD (technical sciences), professor; This email address is being protected from spambots. You need JavaScript enabled to view it.
I. I. Frolov, PhD, Deputy director of scientific-technical center, Ryazan State Instrument-Making Enterprise;
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S. V. Kolesnikov, Assistant professor, RSREU; This email address is being protected from spambots. You need JavaScript enabled to view it.
P. V. Zharikov, Design engineer, Ryazan State Instrument-Making Enterprise; This email address is being protected from spambots. You need JavaScript enabled to view it.

The influence of antenna elements mutual coupling on the efficiency of spatial signal processing in antenna array is researched. The aim of the work is to improve the efficiency of spatial processing with mutual influence of antenna array elements. The optimal spatial structure of signal amplitude-phase distribution measurements is calculated. The spatial structure of antenna array is optimized to increase the noise immunity to spatially concentrated interferences and intermodulation interferences. The efficiency of active interference spatial suppression using spatial structure optimization is researched. This process significantly reduces the dispersion of spatial correlation matrix eigenvalues and increases the algorithm convergence rate. 

Key words: antenna array, mutual impedance, spatial structure, interference suppression, amplitudephase distribution, intermodulation interference. 

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