Вісник НТУУ «КПІ». Радіотехніка, радіоапаратобудування : збірник наукових праць, Вип. 93

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https://ela.kpi.ua/handle/123456789/62661

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Перегляд Вісник НТУУ «КПІ». Радіотехніка, радіоапаратобудування : збірник наукових праць, Вип. 93 за Ключові слова "control function"

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    Issues of Optimizing Detection of Stealth Aircraft Using Group of Satellites Flying at Different Altitudes
    (КПІ ім. Ігоря Сікорського, 2023) Agayev, F. G.; Asadov, H. H.; Aliyeva, G. V.
    The article is devoted to the optimization of the detection of stealth aircraft using a group of satellites flying at different altitudes and equipped with an infrared reproducing system. The main sources for the formation of the infrared signature of stealth aircraft are the heating of the aircraft casing during flight and the high-temperature plume emanating from the nozzle of the aircraft engine. The necessity of calculating the infrared signature of stealth aircraft is noted. The infrared signature of such aircraft is usually calculated in wide ranges of IR waves. At the same time, there are works according to which it is advisable to use narrow spectral wavelengths for these purposes. A push-pull method of detecting stealth aircraft using satellites flying in a group at different orbital altitudes has been developed. The proposed method makes it possible to increase the signal-to-noise ratio in the resulting informative signal, which is the difference between the signal from the aircraft itself and the background signal within the frame. It is shown that the introduction of a binary control signal depending on the spatial resolution of the distance to the satellites allows minimizing the total background signal coming from a group of satellites. At the same time, an increasing version of this function applied to the sum of signals from the background under a given restrictive condition ultimately increases the signal-to-noise ratio in the system, and also increases the probability of detecting a stealth aircraft using spectrometric devices installed on satellites.