Категория: 2.9. Transport systems

Aircraft positioning in a multi-position surveillance system based on a modified least-squares method

DOI 10.51955/2312-1327_2025_4_

Ilya N. Rostokin

Oleg A. Gorbachev

Sergey V. Snimshchiko

Abstract. The concept of improving surveillance within the air traffic control (ATC) system is based on the use of modern technological solutions for the benefit of civil aviation of the Russian Federation. Currently, high-precision and continuous determination of the aircraft position can be ensured through the use of a multi-position surveillance system (MPSS). This article proposes an algorithm for determining the aircraft position in the MPSS based on the modified least squares method (MLSM). A distinctive feature of the proposed algorithm is the obtaining of estimates of aircraft coordinates under the assumption of random measurement errors and the estimated state vector with a nonlinear dependence of measurements on the estimated parameters. To evaluate the accuracy of the proposed algorithm, experimental studies were conducted through computer simulation. Analysis of the obtained results demonstrated high accuracy of aircraft coordinate determination and consistency with theoretical data. Thus, the use of the developed algorithm based on the modified least squares method allows for the estimation of aircraft coordinates in a multi-position surveillance system with high accuracy under the random behavior of the estimated state vector and measurement errors.

Key words: multi-position surveillance system, modified least squares method, aircraft, location, covariance matrix, root mean square error.

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Airway network control through the application of Braess’ paradox

DOI 10.51955/2312-1327_2025_4_

Grigory A. Gasparyan

Egor A. Drachenko

Abstract. The paper explores the application of Braess’s Paradox to the optimization of air traffic networks. Building upon the model proposed earlier, it is confirmed that removing specific edges from the route structure can reduce overall flight time. However, the original static formulation limits its applicability under real-world dynamic traffic conditions. An extended framework incorporating Dynamic Traffic Assignment and robust removal methods that account for demand uncertainty are proposed. Simulation results demonstrate that eliminating certain edges consistently leads to reduced delays, even under fluctuating traffic scenarios. The developed approach offers a practical tool for strategic airspace management, enabling resilient network reconfiguration under dynamic and capacity-constrained environments.

Key words: airway network design, Braess’s Paradox, air traffic congestion.

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Development of conflict-free air traffic routes through modeling and testing in a simulator center, taking into account airlines’ commercial indicators and air traffic controllers’ skill levels

DOI 10.51955/2312-1327_2025_4_

Mikhail S. Darmograev

Vladimir N. Nechaev

Yuri S. Korchevsky

Abstract. In this article, the authors analyze the route network of air traffic sectors in the Moscow Zone, taking into account the introduced areas, where flights of civil and experimental aircraft are prohibited without a special permit from the Ministry of Defense. This fact has led to an increased traffic intensity in the Penza 123 (P123) sector of the district control center, which increases the burden on radar control and procedural control controllers. In order to maintain flight safety indicators at an acceptable level, an analysis of the workload of the Penza 1 (P1), Penza 2 (P2) and Penza 3 (P3) sectors was performed separately, a model of the air situation of the Ministry of Health was developed, changes in the commercial efficiency of aircraft operation were calculated and tested with the involvement of existing air traffic services specialists. To obtain more reliable results, all air traffic controllers were divided into groups according to their level of training. The criteria for selecting candidates were such parameters as position, work experience, employee class, presence or absence of aviation incidents and accidents in the work history. In addition, the authors drew conclusions about the effectiveness of the proposed measures. The theoretical significance of the research lies in the development of a methodology for constructing conflict-free routes that takes into account the criteria of flight safety, economic efficiency and is aimed at reducing the burden on air traffic controllers, contributing to the development of the theoretical foundations of the airspace optimization.

Keywords: flight safety, conflict-free routes, regional control center, air traffic services.

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Assessment of actual signal/noise ratio values in radionavigation systems based on experimental data

DOI 10.51955/2312-1327_2025_4_

Alexey A. Shalaev

Abstract. One of the most important ways to improve aviation radio navigation systems is to increase the accuracy of aircraft position-fixing. Among the factors affecting the accuracy of radio navigation systems is the signal-to-noise ratio, the magnitude and dynamics of which are the subject of this work. The assessment of the signal-to-noise ratio will theoretically improve the accuracy of aircraft position-fixing by applying adaptive filtering algorithms. The article presents the results of theoretical studies of the signal-to-noise ratio and the factors influencing its absolute value. An experimental installation for monitoring signals from air navigation support facilities is presented. To assess the changes in the signal-to-noise ratio, the results of recording and studying the signal of the Doppler VHF omnidirectional radio range (DVOR) at Irkutsk International Airport and the daily log of the signal-to-noise ratio for various GNSS satellites are presented.

Key words: spectrum monitoring, radio intelligence, signal analyzing, interference detection, cognitive radio, radio monitoring.

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Detection of critical links in spatial-temporal routes based on complex networks

DOI 10.51955/2312-1327_2025_3_131 

Grigory A. Gasparyan

Abstract: This paper presents an enhanced method for detecting critical edges in spatial-temporal route networks based on complex network analysis. Unlike previous models, the proposed approach accounts not only for the topological characteristics of routes but also for their dynamic variability through a composite weight that includes the average travel speed and its variance. Additional metrics, such as load centrality and robustness of connectivity, are introduced. Critical edges are automatically identified via percolation analysis, without the need for manual threshold adjustment. For criticality prediction, a gradient boosting model is employed, using a set of structural and temporal features. The proposed approach ensures more accurate, reproducible, and adaptive identification of vulnerable segments in route networks and can be applied in real time to support air traffic management.

Key words: air transportation, airway network, complex networks theory, spatial-temporal network, critical link detection, network centrality, percolation theory.

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Statistical methods for inspection of pressed parts

DOI 10.51955/2312-1327_2025_3_56

Nikolai S. Khersonsky

Ludmila G. Bolshedvorskaya

Abstract. A review of publications and research results in the aviation and aerospace industries indicates a lack of development and recommendations for the use of statistical methods to assess the quality and reliability of pyrotechnic devices that are part of such important systems as propulsion systems, separation systems, structural elements of aircraft and other devices. The article presents a methodological approach to conducting a statistical assessment of the quality of pressed parts, as a result of which manufacturers of complex technical units and components will be given the opportunity to reduce the number of defects and alterations, optimize the production process and increase labor productivity. In addition, the stable quality of components confirmed by the results of statistical analysis will ensure reliable operation of finished products extending their service life.

Keywords: tables of classification of controlled parameters, statistical analysis, quality of pressed parts, reduction of the number of defective pressed parts, plans of statistical acceptance control on a quantitative and alternative basis.

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The task of synthesizing algorithms for complex processing of information about the movement of objects in the territory of airfield maneuvering with the possibility of reconfiguration of information channels

DOI 10.51955/2312-1327_2025_3_119 

Nelli M. Romanenko

Eduard A. Bolelov

Anzhela S. Borzova

Abstract. The safety of ground traffic on the airfield movement area is largely determined by the effectiveness of airfield surveillance systems. Currently, radar surveillance systems are used to solve the tasks of monitoring and controlling ground traffic at the airfield. Despite their high technical and tactical characteristics, these systems are subject to the influence of natural and artificial radio interference, which can significantly limit their application for surveillance and traffic control, to the point of making the information unusable. A promising development is a vibroacoustic monitoring system, the functioning of which is based on other physical principles. However, vibroacoustic surveillance systems also have disadvantages, the main of which is the inability to observe a stationary object with the engines turned off. The urgent task is to combine existing and promising surveillance systems into a single integrated system in which the disadvantages of one surveillance system will be compensated by the advantages of another surveillance system. This article discusses the problem of synthesizing algorithms for complex information processing of object movement in the airfield movement area, with the possibility of reconfiguring information channels.

Keywords: integrated processing algorithm, ground movement, airfield movement area, mathematical model, airfield survey radar, surveillance system, multi-position surveillance system, vibroacoustic surveillance system.

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Method for determining an aircraft route to avoid a thunderstorm using the shortest path on a graph

DOI 10.51955/2312-1327_2025_3_35

Gennadiy V. Kovalenko

Ilya A. Yadrov

Abstract. The article presents the results of developing a method for determining the optimal route for bypassing an aircraft (AC) of a temporally constant (stationary) zone of thunderstorm activity and heavy rainfall. The method is based on finding the shortest path on a graph. It takes into account the geometries of hazardous meteorological phenomena and the minimum safe distances to them. The authors compare strategies based on the use of convex and concave hulls in the formation of thunderstorm bypass zones. The analysis reveals a statistically significant difference in the central tendencies of the corresponding route lengths. It demonstrates that routes using concave hulls are on average 2% shorter, with possible absolute differences in lengths of up to several hundred kilometers. The main practical result of the work is that the proposed method for determining the optimal route to avoid a thunderstorm can be used as a tool to increase the situational awareness of aircraft pilots and optimize crew operations when flying in adverse weather conditions. It allows automatic thunderstorm avoidance using an autopilot and contribute to improved economic efficiency of flights by reducing fuel consumption through the selection of the optimal bypass routes.

Keywords: aviation, flight safety, optimization, thunderstorm avoidance, shortest path on a graph, Dijkstra’s algorithm, minimum envelope.

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Current state and prospects for development of airspace planning systems. Part 2

DOI 10.51955/2312-1327_2025_3_87

Alexander Yu. Knyazhsky

Sergey V. Baushev

Abstract. This article is the second part of the review of airspace planning systems. The first part provided a comparative analysis of known air situation models: network, probabilistic, load dynamics, expert, air situation development, potentials, entropy. The second part provides a comparative analysis of existing approaches to airspace planning: route synthesis, ATM load management, flight plans optimization, single air conflict resolution, departure/arrival flow planning. The advantages and disadvantages of the analyzed approaches are identified, their classification is proposed based on the physical meaning and completeness of the group.

Keywords: airspace planning, flight planning, air traffic safety, flight plans, air traffic management, air conflicts, air traffic control.

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On the Experimental Setup for Approbation of an Algorithm for Processing Diagnostic Parameters of Aircraft gas turbine engine Based on Multilayer Neural Networks

DOI 10.51955/2312-1327_2025_3_71 

Huseyn Huseynov

Oleg F. Mashoshin 

Abstract. The paper presents experimentally substantiated tabular data for hyperparameter tuning of multilayer neural networks in aviation gas turbine engine diagnostics. The authors propose seven original algorithms for adaptive training parameter tuning, including methods for dynamic adaptation of the learning rate, strategies for changing the network architecture depending on the engine operating mode, and adaptive approaches to regularization. The parameter ranges cover values from 10–5 to 103, which ensures practical applicability for various architectures and data types. The scientific novelty lies in the creation of adaptive algorithms that take into account the specifics of the diagnostic parameters of gas turbine engine components and their time dynamics.

Keywords: multilayer neural networks, aviation engine diagnostics, hyperparameters, adaptive optimization, gas turbine engines, machine learning, time series.

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