ASSESSMENT OF DEAD ZONE OF JOINTLY OPERATING RADARS

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Research relevance. With the emergence of unmanned aerial vehicles, the assignments of combating them have also become significantly more relevant. Today, operational countermeasures against UAVs are of great importance. Modern UAVs are capable not only of conducting video reconnaissance in a certain area, but also of observing a specific object for a long time and striking it. After detecting and identifying UAVs by RLS, it is necessary to take measures to neutralize them. In the paper, a mathematical model of the evaluation of the dead zone of RLS working together for the effective detection of unmanned aerial vehicles was established and a comparison of the dead zones was made on concrete examples. The purpose of the research work is to solve the problem of effective placement of jointly operating RLS by mathematical methods for nonobserved remaining part of them had minimal volume and to select the necessary placement scheme. The following tasks are solved in the article: analysis of the characteristics of the radar field; development of a mathematical model for evaluating the dead zone of joint radar stations; evaluation of some accommodation options. The following research methods are used to solve the issues: theoretical analysis, mathematical modeling, comparative analysis. The following results were obtained: it was observed that the dead zone was reduced by 1.6 times in the four-station square arrangement scheme, and by 1.3 times in the three-station triangular arrangement scheme. Conclusions: From the comparison of the obtained numbers, it can be concluded that the creation of a radiolocation area by placing RLSs on the vertices of equilateral triangles (in the form of a checkerboard) is more economically profitable, as it requires fewer stations.