Distributed processing of radar information in airspace surveillance systems

IF 0.2 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Visnyk NTUU KPI Seriia-Radiotekhnika Radioaparatobuduvannia Pub Date : 2023-03-28 DOI:10.30837/rt.2023.1.212.15
I.V. Svyd, S.V. Starokozhev
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Abstract

The work is dedicated to the analysis of the quality of combining assessments of the radar signals and airborne objects detections in the implementation of distributed processing of radar information of airspace surveillance systems. The main sources of radar information about the air situation in the airspace control system are primary surveillance radars, secondary radar systems and identification systems on the basis of "friend or foe". It should be noted that the analysis of the information security of single-position radars shows their vulnerability in a wide range of unintentional and intentional interference, as well as determining their location. This is due to the ease of detection of the emitting transmitter of the probing signal in single-position radars. It led to the main disadvantage of single-position radars – low noise immunity and low survivability. The transition to a network of radar systems can significantly reduce the impact of deliberately directed interference. It also allows the use of methods for distributed processing of radar information in airspace surveillance systems. Analysis of the effectiveness of information support algorithms based on distributed processing of radar information of airspace surveillance systems, taking into account the final result, makes it possible to detect airborne objects using a packet of binary-quantized signals, taking into account two algorithms for combining detection results: channel accumulation and combining results; association of channel solutions and accumulation. It shows following: – the quality of consumer information support based on the proposed structure is much higher compared to the used radar information processing structure; the quality of information support for consumers has the best performance when using the signal processing method based on the accumulation of signals with the subsequent combination of detection results; the availability factor of the aircraft transponder significantly affects the quality of information support, already at P0<0.9 the use of integer logic for combining detection information is undesirable.
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空域监视系统中雷达信息的分布式处理
本研究致力于分析在空域监视系统雷达信息分布式处理实施过程中,雷达信号综合评估与机载目标探测的质量。空域管制系统中有关空情的雷达信息的主要来源是一次监视雷达、二次雷达系统和基于“敌我”的识别系统。值得注意的是,单位置雷达的信息安全分析显示其在大范围的无意和有意干扰以及确定其位置方面的脆弱性。这是由于在单位置雷达中探测信号的发射发射机易于检测。这导致了单位置雷达的主要缺点-低抗噪能力和低生存能力。过渡到雷达系统网络可以显著减少故意定向干扰的影响。它还允许在空域监视系统中使用分布式处理雷达信息的方法。分析了基于空域监视系统雷达信息分布式处理的信息支持算法的有效性,在考虑最终结果的情况下,使得利用一组二值量化信号对机载目标进行检测成为可能,同时考虑了两种检测结果组合算法:信道积累和组合结果;渠道解决与积累的关联。结果表明:——与现有雷达信息处理结构相比,基于所提结构的消费者信息支持质量显著提高;采用基于信号积累与后续检测结果相结合的信号处理方法时,对消费者的信息支持质量表现最佳;飞机应答器的可用性因子显著影响信息保障质量,在P0<0.9时,不希望使用整数逻辑组合探测信息。
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Visnyk NTUU KPI Seriia-Radiotekhnika Radioaparatobuduvannia
Visnyk NTUU KPI Seriia-Radiotekhnika Radioaparatobuduvannia ENGINEERING, ELECTRICAL & ELECTRONIC-
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