Кафедра мікропроцесорних технологій і систем (МТС)
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Перегляд Кафедра мікропроцесорних технологій і систем (МТС) за темою "aircraft transponder"
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Публікація Assessing SSR Relative Data Capacity(UKRCON, 2021) Обод, І. І.; Свид, І. В.; Заволодько, Г. Е.; Мальцев, О. С.; Бакуменко, Б. В.; Чумак, В. С.Secondary Surveillance Radars are widely used in many aspects of users’ information support, such as air object recognition and radio beacon tracking. The study considers a two-channel data transmission system as an SSR model and assesses its relative data capacity subject to intentional (correlated and uncorrelated) and intra-system interference as well as fluctuation (masking effect) noise in the request and response channels. It is shown that the aircraft transponder design built on the principles of a single-channel queuing system with denial of service has a significant impact on Secondary Surveillance Radar relative data capacity and the information security of both the aircraft transponder and the entire Secondary Surveillance Radar.Публікація Optimizing Data Processing in Identification Friend or Foe Systems(Telecommunications and Radio Engineering, 2022) Zavоlоdkо, G. E.; Обод, І. І.; Свид, І. В.This paper proposes, in accordance with the Neyman−Pearson criterion, an optimal framework of data processing in airborne object detection by identification friend or foe (IFF) systems with due regard to the current IFF system design as a single-channel fault-tolerant queuing system, which dictates multichannel reception of request signals and imposes limitations on aircraft transponder availability factor. We consider two signal-processing models with two alternative implementations in each one: (1) cross-channel merging of previous channel decisions on tracking either request signals or their impulse components and (2) either preliminary or subsequent inter-period processing of response signals. Data processing is optimized for both temporal and spatial request signal parameters, the aircraft transponder availability factor also being considered. The preliminary inter-channel merging of request/response signal-pulse component detection results proves to be preferable to the current algorithm of subsequent merging request/response signal detection results as this procedure improves the quality of signal detection and reduces the dependence of detection probability on the aircraft transponder availability factor.Публікація Synthesis and Analysis of the Optimal Signal Detector in Interrogating Radio Engineering Systems(2022) Свид, І. В.; Обод, І. І.; Воргуль, О. В.; Мальцев, О. С.This document presents the synthesis and analysis of the optimal interrogation signal detector in aircraft transponders of interrogation radio engineering systems under the action in the interrogation channel of interrogation signal streams emitted both along the main and side lobes of the interrogator antenna, as well as deliberate uncorrelated and correlated interference. It is shown that taking into account the elements and their arrangements in the structure of the detector that evaluate the amplitudes of useful signals, as well as the excess of the amplitudes of superimposed interfering signals over them, makes it possible to stabilize the probability of false alarm when useful request signals are detected and, as a result, to improve the quality of detection of interrogation signals in aircraft responders.