Вісник НТУУ «КПІ». Радіотехніка, радіоапаратобудування : збірник наукових праць, Вип. 103

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Перегляд Вісник НТУУ «КПІ». Радіотехніка, радіоапаратобудування : збірник наукових праць, Вип. 103 за Ключові слова "621.396.96"

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  • Ескіз
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    Multitarget Tracking Algorithm With Joint Probabilistic Data Association Using Coordinate and Amplitude Information
    (КПІ ім. Ігоря Сікорського, 2026) Kovtun, I. S.; Zhuk, S. Ya.
    The widespread use of small Unmanned Aerial Vehicles (UAVs) makes the task of their tracking highly relevant, especially in conditions where objects are at close ranges and their trajectories intersect. Frequency-Modulated Continuous-Wave (FMCW) radar is a modern tool for detecting and tracking small UAVs, allowing for a significant reduction in peak transmit power, thus lowering energy consumption and improving the weight, size, and cost characteristics of the system. Small UAVs have extremely low radar cross-section values. Increasing the detection range of small UAVs by FMCW radar can be achieved by lowering the detection threshold, which, however, leads to a significant increase in the probability of false alarms. To improve the efficiency of multitarget tracking using FMCW radar data in the presence of a significant number of false alarms, the Amplitude-Aided Joint Probabilistic Data Association Filter (AA-JPDAF) algorithm has been developed. This algorithm proposes the use of decision statistics (amplitude information) from the output of the optimal primary signal processing receiver as additional information. This information is utilised at the data association stage based on the Joint Probabilistic Data Association (JPDA) method. Target motion parameter estimation for each trajectory is performed using the Extended Kalman Filter (EKF). The analysis of the AA-JPDAF algorithm and its comparison with the conventional JPDAF were conducted via statistical simulation for scenarios involving intersecting trajectories and long-term parallel motion of targets at close ranges.
  • Ескіз
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    Optimization of Laser Hazard Warning Systems
    (КПІ ім. Ігоря Сікорського, 2026) Asadov, H. H.; Guliyev, F. F.; Nematzade, R. G.
    Actuality. Active and semi-active optical guidance systems for projectiles and missiles at a target mainly use a laser beam from a Laser danger Warning System (LWS) designed for prompt notification of the fall of a laser targeting beam on an important protected object. Photodetectors are used to register the laser beam hitting the surface of the protected object. To reduce the likelihood of a false alarm, it is necessary to achieve the possibility of receiving the largest possible optical signal on photodetectors. Setting the task. To increase the accuracy of the generated alarm signal based on the signals of photodetectors detecting direct laser beam hits, it is proposed to install additional remote photodetectors for recording reflected and diffusely reflected optical signals. Method. The problem of optimal selection of the ratios of distances from the laser to the target and from the target to additional receivers in LWS with remote photodetectors has been formulated and solved. Two subtasks are formulated: in the first, the target indicated by the laser belongs to the enemy, and in the second, the opposite side. It is shown that when optimizing systems of laser-guided missiles and projectiles, taking into account the LWS introduced by the enemy, it is possible to use the theory of the Laser Detection and Ranging (LADAR) systems. The result is that the application of the theory of radar systems has made it possible to optimize the functioning of the attacking side in terms of optimal choice of the distance to the enemy using the LWS with remote photo sensors.