UDC 519.876.5

Probabilistic estimation of radar signal detection by digital antenna array with spatial correlation method of signal processing

 

I. M. Oroshchuk ¹, A. N. Suchkov ², S. L. Melnik ², M. V. Soloviev ²

¹ Far Eastern Federal University (FEFU), Sukhanova str., 8, Vladivostok 690090, Russia

² The Pacific Higher Naval College named after S.O.Makarov, Kamskiy lane 6, Vladivostok 690062, Russia

 

The paper is received of May 22, 2019

 

Abstract. Digital antenna arrays application in modern radio-electronic equipment discloses availabilities of non-classical signal processing methods and antenna arrays building principle. Particularly, the use of nonlinear signal processing methods and nonuniformly-filled array can become a basis for perspective radio-electronic systems creation, which are characterized by improved directional properties of antennas, high interference and noise immunity along with their considerable decrease in value. For detailed analysis of radio electronic systems capabilities, the expensive natural experiments are required. In this regard that it is more expedient to assess their capabilities by simulation. The article is devoted to the probabilistic model of the receiving digital antenna array with the spatial correlation method of signal processing. The model is obtained on the basis of the Neumann-Pearson criterion for the conditions of surface propagation of radio waves and the use of noise-like probing radar signal with Gaussian distribution. The expression for estimation of noise immunity of the detector and expression for calculation of the required sample size at which the set probabilistic characteristics of detection of a radio signal are reached is received. The method of probabilistic estimation of radar signal detection is presented. This method is based on the deterministic dependence of the space-correlation field of radio signals of decameter waves and for surface stochastic simulation model of radio interference synthesis. These models allow space-correlation dependences to synthesize the fields of radio signals and radio interference for a given frequency and bandwidth of signal processing paths. This technique can be recommended for studying the configurations of the aperture design of the antenna array with spatial correlation signal processing, providing a given noise immunity of electronic detection systems without significant costs for experimental research.

Key words: digital antenna array, spatial correlation characteristics of radio signals and radio interference, radar signal, Gaussian distribution, Neumann-Pearson criterion, noise immunity, simulation.

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For citation:

I. M. Oroshchuk, A. N. Suchkov, S. L. Melnik, M. V. Soloviev. Probabilistic estimation of radar signal detection by digital antenna array with spatial correlation method of signal processing.  Zhurnal Radioelektroniki - Journal of Radio Electronics. 2019. No. 6. Available at http://jre.cplire.ru/jre/jun19/2/text.pdf

DOI  10.30898/1684-1719.2019.6.2