The Proposal to Choosing a Rational Number of Elements in the Multiradar System Structure

Abstract

The subject of research in the paper is the problem of choosing a rational number of elements in the structure of a multiradar system of the same type of two-coordinate surveillance radars with mechanical rotation. The purpose of the paper is determination a rational number of multiradar system elements, which will provide an optimal improvement in the quality of detecting air objects according to the cost-effectiveness criterion. To improve the quality of detection of small-sized objects, surveillance radar stations are combined into a spatially separated multiradar system. An assessment of the characteristics of detecting air objects in a multiradar system with a matched signal reception is carried out. The calculations were carried out for systems that consist of a different number of elements. The calculations show that the addition of second radar, regardless of the degree of signal coherence, showed the greatest efficiency in terms of signal-to-noise ratio, the rational number of radars in a multiradar system is no more than four. In a multiradar system of four radars, the threshold signal-to-noise gain can be up to eighteen decibels for a system with coherent signals and up to eleven decibels for a system with incoherent signals. More than four radars are impractical.