Кафедра мікропроцесорних технологій і систем (МТС)

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https://openarchive.nure.ua/handle/document/6602

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Перегляд Кафедра мікропроцесорних технологій і систем (МТС) за Тема "aircraft transponder"

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  • Зображення мініатюри
    Документ
    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.
  • Зображення мініатюри
    Документ
    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.