Abstract
The solution of the tasks assigned to the National Guard of the state implies the presence of certain forces and means with the appropriate technical equipment. A well-known place among such tasks is security of important state facilities. Various physical effects and methods, including radar, are used to create security systems. The development of radar technology and technology made it possible to increase both the quantity and quality of the received information, as well as the use of radar stations for observing living objects. The industry today produces bioradioradars for detecting people and controlling their movements. All samples are made in a single-position version and have a relatively high cost, the fact of their work is easily detected, which facilitates their suppression, including force. In order to increase the secrecy of work, it is proposed to use the methods of separated, more precisely, bistatic location to control the area in front of particularly important objects. The defining detection index is the effective reflective surface (ERS), which is about 1 m2 for a person. Equipment, weapons and protective equipment contributes to the increase in the ERS. Given the small reflective surface of biological objects, it is proposed to limit the area of responsibility to the sector form in which, at a certain bistatic angle, the effect of a significant increase in the signal/(interference+noise) ratio is manifested. For a specific definition of the gain, it is necessary to choose the operating frequency of the bistatic system and its geometry. For greater secrecy, it is advisable to use the transmitters of radio and television broadcasting, mobile communications, etc. The estimates found, for example, when using digital television transmitters (T2), indicate that the creation of a secretive bistatic system is quite possible – at least in a geometric interpretation.
Highlights
The issues of ensuring the security of various objects, first of all – especially important state ones, are highly relevant
It is necessary to take into account the specifics of choosing the type and location of detection tools (DT), and possible methods of influencing the DT of a qualified intruder who has a priori knowledge of the principles of operation and parameters of the means, which reduces the possibility of its detection
Let’s note in passing the condition under which we can expect a significant increase in bistatic effective dispersion zone (EDZ): St >> λ2
Summary
The issues of ensuring the security of various objects, first of all – especially important state ones, are highly relevant. The following objectives are set: – to ensure covert and early detection (in comparison with existing norms) of the fact of the infiltration of violators into protected areas; – to monitor the movement of potential intruders, including on vehicles, in the direction of protected objects to issue a transition signal to high alert; – taking into account the existing location of radio-emitting centers, determine rational geometry in open areas to achieve maximum responsibility based on the technical characteristics of the light sources. A sharp increase in the bistatic σb effective dispersion zone (EDZ) of objects is observed This allows the same time to reduce the requirements for the energy potential of the radar at the same range. Recall that Zolochiv and Vovchansk are located in the northern part of Ukraine, and all other locations on the map are in the Russian Federation
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