An efficient source of pulsed electromagnetic radiation in the range 0.3–10.2 µm is described. The parameters of the device and the results from studies of the radiation characteristics are presented.

Ensuring noise immunity is one of the main tasks of radio engineering and telecommunication. The main task of signal receiving comes down to the best recovery of useful information from a signal that is destructed during propagation and received together with interference. Currently, the interference and noise control comes to the fore. Modern elements and methods of processing, related to intelligent systems, strengthen the role of the verification and recognition of targets. This makes noise control particularly relevant. The most-important quantitative indicator that characterizes the quality of the useful signal is the signal-to-noise ratio. Therefore, determining the noise parameters is very important. In the present paper, a signal model is used in the form of an additive mixture of useful signals and Gaussian noise. It is an ordinary model of a received signal in radio engineering and communications. It is shown that the phase portrait of this signal has the shape of an ellipse at the low noise level. For the first time, an expression of the width of the ellipse line is obtained, which is determined by the noise dispersion. Currently, in electroencephalography, diagnosis is based on the Fourier transform. But, many brain diseases are not detected by this method. Therefore, the search and use of other methods of signal processing is relevant.

The object of this study is the high-power UV radiation at different pulses and its effect on Bacillus anthracis spores. The destruction of pathogenic microorganisms at environmental objects is the key to sustainable epizootological well-being. The results of the study show that the effect of powerful pulses on the destruction of pathogenic microorganisms is achieved during a short series and even single exposures. In this case, a pulsed UV sterilizer based on a magnetoplasma compressor with a pulsed ultraviolet flux power of 3.6 MW with a wavelength of 185‒320 nm of ultraviolet radiation was used. The prospects for pulsed sterilization technology have been shown. As a result of laboratory tests, it was established that the elimination degree of spores of the test microorganism Bacillus anthracis CTI, applied to wooden plates, is lg 2.5; applied to plastic plates – lg 3.2, while the degree of death of spores applied to metal plates is lg 4.0. Based on the results, wood and plastic require more attention when choosing disinfection methods due to their lower efficiency in this context. The high resistance of spore microorganisms requires the use of high dose loads to neutralize the anthrax pathogen. The proposed disinfection methodology is relevant and can be used by veterinary medicine laboratories, livestock farms of various forms of ownership, the scientific community, and industrial enterprises manufacturing technological equipment. Further research should be aimed at devising and improving methods for combating pathogenic microorganisms and ensuring sustainable epizootic well-being

Unmanned aerial vehicles (UAVs) have recently become widespread, because they are capable of performing a wide range of functions useful for mankind. At the same time, UAVs are a source of potential threats in a number of areas of human activity, namely, military, economic, and everyday life. Therefore, an urgent scientific and technical problem of detecting and observing UAVs has been formed recently to prevent them from performing unauthorized actions. The main means of UAV surveillance are radar (both active and passive), optical, infrared, acoustic stations, as well as complex systems in which joint processing of information obtained using these information channels is carried out. However, in general, the scientific and technical problem of monitoring UAVs, especially small UAVs, remains unresolved: the efficiency of UAV detection using all these methods remains insufficient, and the needs of practice are far from being fully satisfied with the available means. This article is devoted to the analysis of currently known scientific and practical results aimed to assess the possibility of detecting UAVs by radio signals scattered by acoustic disturbances of the environment created by UAVs, and to formulate urgent scientific and technical problems in this aria of knowledge.

The results of experimental investigations of the effect of high-intensity pulsed UV radiation on the influenza virus type A (H1N1) are presented. The research methodology is developed and the structure of the experiments is described. An end-face plasma accelerator was used as a radiation source, which provides a power pulsed discharge in an open atmosphere. The high efficiency of inactivation of the infectiousness of the virus was shown within a short period of time. The possibility of providing urgent 100% sterilization of a viral infection has been shown for the first time. A model for calculating the efficiency of pulse sterilization has been developed. The prospects for the application of pulse sterilization technology to combat coronavirus infection are considered.