ΠšΠ°Ρ‚Π΅Π³ΠΎΡ€ΠΈΡ: Air traffic monitoring and management systems

Mathematical model for validating ADS-B messages on the airfield surface

DOIΒ 10.51955/2312-1327_2024_4_Β 

Alexander P. Plyasovskih

Artem V. Koposov

Alexandra A. KatrichevaΒ 

Abstract. The article proposes a mathematical model for validation of messages of automatic dependent surveillance of broadcasting type (ADS-B). The relevance of the study is due to the growing requirements for the security and reliability of information systems, as well as the need to ensure the integrity and reliability of transmitted information in the context of modern threats. The paper presents the main components of the model, including information sources, data transmission channels and error detection mechanisms. The proposed model describes the processes occurring in the ADS-B systems, taking into account artificial and natural interference that affects the reliability of surveillance information, allows you to predict the actions of intruders trying to violate the integrity of the ADS-B systems, and to predict the operation of the ADS-B system under interference, provides the possibility of developing effective methods to validate ADS-B messages in the terminal area. Thus, the presented mathematical model for validating ADS-B messages serves as an important step towards improving the reliability of information systems and protecting critical information from unauthorized access and distortion.

Keywords: ADS-B, time difference, model, validation.

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Analysis of the principles of processing navigation information and constructing the working zone of a multi-position surveillance system

DOI 10.51955/2312-1327_2024_3_76

Dmitry Y. Urbansky

Abstract. The use of modern surveillance equipment in accordance with ICAO recommendations is aimed at improving the efficiency of air transportation, increasing the capacity of airspace and airfields, and improving the safety of flights and ground operations. The introduction in the Russian Federation of a multi-position surveillance system (MPSS) based on automatic dependent surveillance of the broadcast type (ADS-B) is intended to facilitate the implementation of state and regional aviation development programs in terms of creating conditions for improving flight safety, availability and quality of air navigation services for airspace users. Therefore, the analysis of the principles of constructing a working area and processing navigation information in a multi-position surveillance system for improving the accuracy of aircraft position-fixing is an urgent research task. An approach to improving the efficiency of the MPSS operation when processing information in conditions of noise and interference has been considered. Analysis of the results of modeling the proposed algorithm based on the discrete Kalman filter shows high accuracy of estimating the planned coordinates of an aircraft. Specialized software has been developed to automate the process of calculating and constructing working areas of a multi-position surveillance system.

Keywords: multi-position surveillance system, multilateration technology, automatic dependent surveillance, Kalman filter, working area, location, least squares method.

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Assessment of the possibility to implement the surveillance process in the regional centers of the air traffic management system of the Russian Federation

DOI 10.51955/2312-1327_2024_2_96

Vyacheslav V. Erokhin

Boris V. Lezhankin

Dmitry Y. UrbanskyΒ 

Abstract. Air traffic management (ATM) in regional air traffic control centers is determined by the availability of surveillance equipment that uses the radar principle of determining the coordinates of aircraft. The responsibility zones of the airspace are vast territories where the placement of radar surveillance equipment forming a single control field is not economically feasible. The presence of local areas of space with no air traffic surveillance significantly reduces the safety, regularity and efficiency of flights. The introduction of new technologies that require significantly lower economic costs needs an assessment of the possibility to use them in the relevant regional ATM centers. Therefore, an urgent scientific task is to study the possibility of using multi-position surveillance systems (MPSS) as an assessment of the accuracy characteristics and locations of system elements. The obtained research results can be applied when placing MPSS ground stations to achieve high performance indicators of the surveillance system and air traffic management as a whole.

Keywords: multi-position surveillance system, multilateration, receiving station, working area, location.

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The time-optimal synthesis technique flight paths of an unmanned aircraft

DOI 10.51955/2312-1327_2024_2_134

Oleg N. Skrypnik

Ekaterina V. Kurylenko

Abstract. The article considers the method of synthesis of an optimal UAV flight path and an algorithm of the flight control system. The system and algorithm are designed for four-dimensional (4D) trajectory-based operations (TBO) in the context of the CNS/ATM and PBN concepts, which will increase the operational efficiency of the UAV navigation and piloting processes. The paper presents a mathematical model of the control object and algorithms for forming a time-optimal flight path. An assessment of the proposed methodology is also presented by verifying and validating the system software using simulation modeling. The results obtained demonstrate the functional capabilities of the control system to create time-optimal profiles of trajectories that meet operational requirements.

Keywords: unmanned aerial vehicle (UAV), control system, optimal flight path.

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Synthesis of an algorithm for estimating parameters of a multiposition surveillance system and research of filtering divergence

DOI 10.51955/2312-1327_2024_1_78

Vyacheslav V. Erokhin

Boris V. Lezhankin

Dmitry Y. Urbansky

Abstract. The accuracy of aircraft position measurements directly affects flight safety and is one of the most important tactical characteristics. The introduction of new advanced surveillance tools, such as multi-position surveillance systems (MPSS), can significantly increase the level of flight safety, as well as improve the efficiency of airspace use. The authors consider the task of improving the quality of MPSS functioning and increasing the accuracy of estimating the aircraft coordinates. The accuracy of position-fixing is determined by the error in measuring the time of signal arrival under the influence of noise and interference. Random disturbances must be taken into account to ensure high-quality MPSS operation. This is achieved by applying the methods of Kalman filtration theory. Therefore, to solve the problem of estimating the MPSS state variables, it is proposed to use a Kalman filter (KF). The effectiveness of using the Kalman filter depends on the adequacy of mathematical models and real processes. Model inaccuracies associated with the functioning of navigation systems lead to KF divergence. The paper presents the results of theoretical studies and simulating the MPSS functioning processes based on the implementation of the KF algorithm.

Keywords: Kalman filter, divergence of the filtering process, estimation algorithm, multi-position surveillance system, random disturbances, aircraft.

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Simulation of ADS-B data confirmation with temperature correction when estimating flight altitude on local air lines (part 2)

DOI 10.51955/2312-1327_2024_1_90

Andrey S. Kalintsev

Abstract. In the first part of the article, the author proposed a modified method for confirming the ADS-B data, which estimates and compares the aircraft flight altitude: barometric altitude (received from a barometric pressure altimeter) and geometric altitude (received from a GNSS receiver). In the presented work, application of the modified technique for confirming the ADS-B geometric altitude data is simulated. When simulating, real data were used which were received from the ADS-B ground station located at the Mezen aerodrome. Real values of pressure and temperature were used. The methodology takes into account the values of quality indicators of ADS-B data. For one flight on local airlines, an excess of the permissible interval was shown (GNSS data, according to the methodology, are not confirmed). The result obtained is consistent with the geometric vertical accuracy parameter GVA. To verify the modified method of the temperature determination according to geometric and barometric altitude, the obtained temperature data are compared with the values of the ECMWF forecasting model. The average RMSE value for 11 flights was 1.58ΒΊΠ‘. For climbing aircraft the maximum RMSE value was 1.93ΒΊΠ‘, for landing aircraft, maximum RMSE = 2.7Β°C.

Key words: flight safety, ADS-B, model, local airlines, barometric altitude, geometric altitude, TAS, IAS.

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Using the TDOA method for validation of broadcast automatic dependent surveillance

DOIΒ 10.51955/2312-1327_2023_4_50

Alexander P. Plyasovskih

Artem V. Koposov

Vladislav Yu. Davidenko

Abstract. The paper considers the possibility of using the Time Difference of Arrival (TDOA) method, which can be applied to confirm the reliability of information coming from multiple sources. TDOA method can be applied to validate the information received from several ground automatic dependent surveillance stations of broadcast type (ADS-B). The paper is aimed at studying the TDOA method and its application to ADS-B stations. This method makes it possible to use the ADS-B as the only means of surveillance at the airfield. Currently, according to ICAO recommendations, ADS-B stations are not allowed to be used as a stand-alone surveillance aid due to the problems related to the possibility of distorting a signal or introducing some false information into messages, so the operation of this type of stations is possible only together with other means of surveillance, such as multi-position surveillance systems (MLAT) or secondary surveillance radar systems (SSR) thus increasing the cost of organizing surveillance on the airfield. Thus, the relevance of the work is related to the need to find an alternative method of confirming the validity of an ADS-B message.

Key words: ADS-B, validation, spoofing, time difference, hyperbole.

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Modified methodology for confirming ADS-B data with correction of temperature values when estimating the flight altitude

DOIΒ 10.51955/2312-1327_2023_4_28

Andrey S. Kalintsev

Abstract. The International Civil Aviation Organization indicates the need to confirm the ADS-B data. The ADS-B messages include information about the horizontal and vertical location. Information about the altitude of an aircraft in civil aviation is of great importance. The article proposes a modified methodology for confirming ADS-B data when performing flights on local airlines, which allows us to estimate and compare the geometric and barometric altitude of aircraft flight transmitted in a standard ADS-B message. The proposed modification of the method consists is correcting the temperature values, using the full barometric Laplace formula, taking into account the ADS-B quality parameters. In a level flight, with no ground velocity vector data, temperature is corrected using the airspeeds (TAS, IAS) transmitted in the ADS-B message. The method uses a maximum permissible error of 90 m. It is also proposed to determine the air temperature according to geometric and barometric altitude data transmitted in the standard ADS-B message. The determination of air temperature at altitudes involves the use of the ADS-B data from the aircraft that completed take-off. To determine the temperature according to the data of the aircraft completed landing, statistics of data from several aircraft is needed.

Key words: flight safety, ADS-B, temperature, barometric altitude, geometric altitude, TAS, IAS.

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Increasing airfield capacity with the integrated aircraft arrival/departure manager (AMAN/DMAN)

DOI 10.51955/2312-1327_2023_3_30

Alexander Yu. Knyazhsky

Alexander P. Plyasovskih

Alexander V. Tarasenko

Abstract. The article proposes a method for increasing the capacity of an aerodrome and reducing the average delay of arriving / departing aircraft by optimizing the queue of them, taking into account the specified minimum allowable time intervals between aircraft, depending on their weight categories of movement stages (take-off landing). An analysis of the effectiveness of this method was carried out, for the evaluation of which a stream of events (departures and arrivals) with a Poisson distribution was used. The dependences of the average delays of departures and arrivals on the flow intensity of departures and arrivals are estimated as well as the potential for increasing the aerodrome capacity by this method. The effectiveness of the departure control system was compared in terms of absolute priority for arriving aircraft and in terms of the equal priority for arriving and departing aircraft. It is shown that an integrated arrival/departure manager with the equal priority for departing and arriving aircraft is more efficient than with absolute priority for arriving aircraft.

Key words: AMAN, DMAN, air traffic control, departures, arrivals, ATC AS, capacity.

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Concerning the geometric visualization of particle motion in space and time on the example of air traffic

DOI 10.51955/2312-1327_2021_1_6

Aleksandr P. Plyasovskikh

Abstract. The article presents a new original method of geometric visualization of particle (or aircraft) motion in space and time. The urgency of the proposed method stems from disadvantages of the traditional method of presenting the motion in space-time having as one of its coordinates theΒ Β  time which is independent on spatial coordinates. In this space-time, the concept of distance between two points is not defined, the concepts of angle, triangle, geometric figures are not defined as well, it does not allow Euclidian geometry to be used. The author proposes the use of four-dimensional Euclidian space with the fourth axis z = bt where b is a speed constant, t is time, for presenting the motion of a particle (aircraft) in space and time. The particle (aircraft) motion presented with the use of the space proposed by the author is a visualized one, the track makes geometric sense of a Euclidian geometry line. The examples of presenting the four-dimensional motion of an aircraft along its route are given, the concept of four-dimensional corridor of aircraft motion is defined. It is shown that the proposed method could be used for description and research of particle (aircraft) motion in space and time. The method opens up a new direction of research of particles and other material objects moving in space and time with the use of multi-dimensional, in particular, four-dimensional geometry. The importance of the approach proposed in the article is that it opens new directions of scientific research in such sciences as physics (not relativistic mechanics), navigation and air traffic control, space mechanics and many other sciences in which processes of motion of different objects in space and time are researched. The author is going to continue publishing the results obtained due to the proposed method which are not included in the present paper because of space limitations.

Key words: air traffic control, 4D trajectory, 4D space, material particle, multidimensional geometry, space-time.

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