The work presents the optimization of the system of signals emitted by aircraft transponders of the Identification Friend or Foe system, which is based on the use of a system of signals, each of which determines specific spatial coordinates of the airspace. That allows, having received the coordinates of an aerial object based on the data of the primary radar and comparing them with the coordinate data obtained from the received signal of the Identification Friend or Foe system, to carry out the identification of the detected aerial objects. Thus, it is possible to implement interference-resistant systems for the identification of aerial objects, built at the network level with distributed information processing and capable of providing reliable information to users of the airspace control system. An algorithm for constructing such a signal system has been developed. It is optimal for the minimum intrasystem interference based on the main signal.

In the presented work, based on the representation of the total flow of range request signals, as well as intentional correlated and uncorrelated interference to a range-finding radio beacon as a Poisson flow, the capacity of both the range-finding beacon range transponder and the short-range radio engineering system as a whole is estimated based on the implementation of the method for extracting synchronous sequences of incoming range interrogation signals in the ground range transponder. It allows on a succession basis to move from the service signal to a requester service and, as a result, increase the throughput of the long -range radio beacon in question.

In the presented work, based on the Neyman-Pearson criterion, the optimal structure for detecting request signals in an aircraft responder of the SSR (IFF) system is synthesized, in which the optimization of the detection of signaling information is carried out not only in time, but also in the spatial parameters of the received request signals, and also takes into account the relative throughput of the aircraft responder. It is shown that the interchannel fusion of the results of detection of the component pulses of the request signal is more preferable in comparison with the existing algorithm for merging the results of the detection of the request signal, since it allows to improve the quality of detection of the request signals and somewhat reduce the dependence of the probability of detecting the request signal on the relative throughput of the aircraft responder.

Given the current trends in robotics, the paper provides an overview of sensors for use in robotics.It is given what characteristics the sensors must meet for further integration into mobile works.

Nowadays the system of engineering and technical education is facing acute challenges of today.Innovative technologies confidently occupy leading positions in society.But there is still a significant shortage of qualified specialists for STEM fields.The paper considers the introduction of elements of STEM education in the laboratory practice of designing devices on microcontrollers and programmable integrated circuits.The comprehensive approach of STEM education allows in the laboratory practice to expand the horizons and awareness of students in relation to the tasks of work.Also, these developments can be scaled to tangential educational components.

The paper presents a comparative analysis of the quality of request signals processing of secondary radar systems of the international mode RBS, regulated by the ICAO standard, as well as the method of transmitting flight data from an air object using ATC information codes. It has been shown that when receiving encoded request signals, the operations of decoding and inter-period processing of pulses can be carried out in two ways: decoding with preliminary inter-period processing of input pulses and decoding with subsequent inter-period processing of decoded pulses). It is shown that the information code of ATC mode is more noise-resistant in comparison with information code of RBS mode when implementing integer processing logic. With fractional processing logics, RBS mode code is more noise-resistant.

In the presented work, a method is proposed to increase the interference immunity of the range channel of short-range navigation systems, in which a successive transition is made from servicing the request signals of individual range requesters to servicing individual amplitude channels of the received request signals on the range transponder. This made it possible to switch from servicing individual range request signals to servicing individual range requesters and thereby exclude the possibility of paralyzing the aircraft transponder by deliberate correlated interference of the required intensity by the interested party and, as a result, increase the interference immunity of the range channel of short-range navigation systems.

This paper is focused on some practical aspects of optimization of MCU software written in C programming language using RTOS.Machine-specific optimizations and RTOS specific optimizations are described.

In the present work, it is shown that the successive transition from positional coding of the transmitted response signal of secondary radar systems to modern methods of modulation of secondary radar response signals can significantly reduce the time base of the emitted response signals and, as a result, increase both the throughput and noise immunity of secondary radar systems. Radar and Identification Identify Friend or Foe systems. It is shown that the time base of the response signal using QAM, time base equal to sixteen, and the five-out-of-six processing method is reduced by a factor of fifty with the existing number of discharges.