A number of terrorist attacks have occurred worldwide in recent years. Terrorist organizations under the guise of “fighting for human rights”, with limited financial support from other countries, are trying to destabilize the situation in the country. At the same time, various methods of terrorist acts and attacks are used, which have severe economic and political consequences. The possible threat of such terrorist acts on the territory of our country has forced to raise questions about the protection of important state facilities (including base airfields of the State Aviation of Ukraine). In order to counter terrorist acts, which have recently been carried out in most cases with the use of unmanned aerial vehicles, which significantly increases the awareness of terrorists about the object in real time and allows making changes to previously planned actions if needed, the authors consider possible technical ways for improving systems of protection for base airfields of the State aviation of Ukraine from actions of terrorist groups with the use of basic types of sUAS. On the basis of characteristics analysis, possible tactics and features of employment of sUAS, existing technical means of detection and defeat, experience on the mentioned issues in other countries, the authors of article offered a variant of construction, a set of means for detection and counteraction (defeat) of sUAS.

The hybrid and undisguised aggression against Ukraine by the Russian Federation over the past eight years has led to an understanding of the urgent need to arm the Armed Forces with the latest armament and military equipment, and has spurred a significant increase in domestic military developments. This, in turn, led to an increase in the need to test military products, and the receipt of test requests became widespread. This determines the relevance of the development and implementation of information support system for testing, the purpose of which is to automate test processes and improve the efficiency of the test organization as a whole. The article is a continuation of a series of publications that highlight the principles and approaches to the creation of information support system for testing samples of armament and military equipment, which is planned to be implemented at the State Scientific Research Institute of Armament and Military Equipment Testing and Certification. Based on the proposals on the functionality of the information system, a generalized structure of the information and reference database of armaments and military equipment has been developed. It is proposed to expand the current classifier of armament and military equipment while keeping the structure of the code, which provides coding and entering information into the database of modern and promising models of armament and military equipment of foreign production. It is assumed that the proposed structure of the information and reference database will provide functions to clarify and supplement the tactical and technical requirements for the tested model of armament and military equipment, which in turn will be the basis for developing programs and test methods, and will provide information needs for automated comparative assessment military-technical level of the studied product. It is expected that the introduction of an information system to support the testing of armament and military equipment can significantly increase the capacity of the test organization while ensuring the proper quality of the results.

Satellite navigation technologies are widely used around the world. Existing systems are constantly being upgraded, new satellites are being launched, satellite signals are being improved, military signals that are more resistant to interference are being gated in, ground-based navigation systems are being deployed, and the characteristics of GNSS user equipment are being improved. The effectiveness of GNSS user equipment is influenced by many different factors - from its internal circuit to the signal transmission medium where it is used. Testing of GNSS equipment consists in characterization of system performance and ensuring that manufacturer quality standards are met and expectations of the end user are satisfied. The solution of problems related to the testing of GNSS user equipment is the use of such equipment as simulators, GNSS signal recording and reproduction equipment, broad spectrum signal generation equipment, software for testing GNSS user equipment in laboratory conditions. The abovementioned equipment makes it possible to fully automate the test process by repeatedly performing user-defined scenarios. The use of signal generators for GNSS simulation has advantages over the use of a live GNSS signal. When using live signals the test conditions change constantly and unpredictably, therefore it is unlikely that two identical sequential tests will be performed under the same conditions. Retest is the most important requirement for the test process. The article deals with methods improvement and proposes the choice for rational equipment composition for GNSS user testing equipment.

The article deals with the problem of calculation of errors of improvised devices and installations for physical training experiment in the construction of which digital and analog sensors are used, which are intended for measuring various physical quantities. The general requirements for educational devices are considered: scientific and pedagogical, technical, ergonomic, aesthetic, economic. In the article special attention is paid to the technical requirements of improvised devices and installations. It is noted that it is necessary to ensure their reliability and durability, perfection and simplicity of construction, high metrological indicators. The basic stages of calculation of errors of measurement of physical quantities, features of measurements with use of digital measuring devices are given. The measurement process using digital measuring instruments and automatic measurement methods remove the measurement from subjective errors and have a number of other advantages. It is convenient to make computers and sensors in combination with hardware platforms Arduino, STM32, Raspberry, etc. for the output of home-made appliances. Analog sensors are connected to the analog inputs of the hardware and software platforms that perform analog-to-digital conversion. Digital sensors are easier to use and capable of providing high metrological performance in the design of self-made physical devices. Most sensors have errors in the instructions. The cases of calculation of errors, when the home-made installation uses optical steam as the main measuring tool, are considered. Optical pairs are used in many homemade physics installations - studies of body motion on an inclined plane, studies of rotational motion using Oberbeck pendulum, studies of mathematical pendulum, etc. Examples and schemes of installations and description of experiments with methods of calculation of measurement errors using optical pairs are given. As a result, it is noted that homemade devices using digital sensors, hardware platforms Arduino, STM32, Raspberry and others meet the general requirements for training devices, in particular, have high metrological indicators, are easy to manufacture and require little financial cost.

When analyzing typical assault aviation combat missions, the most common objects for each aircraft actions should be identified, a preliminary estimate of their distance from the front line has to be provided, and one of the objects should be selected as the typical target for evaluating the aircraft effectiveness. A destruction of a typical target by an aircraft with a certain probability is one of the main components of the assault aviation aircraft effectiveness, but it does not fully characterize the effectiveness of the aircraft. In the course of assault aircraft combat mission accomplishment, the generally accepted approach is identification the four aircraft flight phases with a purpose of destruction a surface target. As a combat mission for assault aircraft the striking for destruction an enemy airfield or division of guided missiles can be considered. The choice of flight route and profile is related to the assessment of the enemy's actual areas of engagement to determine the line of maneuvering. The feature of devastating effect of attack ammunition is the conditional law of target destruction. For the means of destruction of a remote action the feature of devastating effect of attack ammunition is a cumulative effect of each munitions at known coordinates of impact points. For the means of destruction which are used in cluster bombs, as a result of small caliber live ammunition scattering the total area of destruction is created. The cover area for single cluster bomb is ellipse shaped. Thus, in order to evaluate the effectiveness of the assault aviation aircraft employment it is advisable to use an indicator such as the effectiveness of the aircraft in one combat sortie. Evaluation of aircraft effectiveness in one sortie consists of estimates of the probability for penetration the means of air defense, the probability of target detection, the probability of target attack, the probability of target destruction and reliability of aviation equipment. For assault aviation, the effectiveness of an aircraft in a single combat sortie has the notion of a total probability of a target destruction or a mathematical expectation of a target destruction.