Dmitriev O. Іnformation technology and methods of supporting decision making in airplane situation analysis

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0520U100494

Applicant for

Specialization

  • 05.13.06 - Інформаційні технології

17-09-2020

Specialized Academic Board

Д 73.052.04

Cherkasy State Technological University

Essay

The dissertation is devoted to solving the urgent scientific problem related to the need to increase the efficiency of situational analysis of the air situation by decision makers by improving information technologies for decision support. For the first time a projection multilevel model of the activity of operators was developed, taking into account the peculiarities of their cognitive behavior in the process of changing the conditions of aircraft management. For the first time, a method of designing an information model system for air traffic service centers is proposed, based on an advanced functional network model, which allows to increase the completeness of the air environment display. Information technology for decision support in situational analysis of the air situation has been further developed, as opposed to the existing ones based on the procedures of intellectual data processing, synthesis of information models, which allows to increase the efficiency and validity of decision making in the assessment of air situation by operators. The analysis of the subject area shows that the situational analysis of the situation in the area of responsibility of the air traffic organization centers is carried out by the operators on the basis of information in the information model, which is automatically displayed at workplaces and on the means of displaying information of collective use. The information model is a necessary and mandatory part of the information support system for decision-making processes. The informational model of the situation offered to the decision-maker is often not fully consistent with the specifics of his or her activity. The decision-making tasks of decision-making in the conditions of uncertainty and dynamics of change of air situation at the limited possibilities of the person for processing, analysis and selection of information lead to decrease of efficiency, adequacy and validity of decision-making. This requires formalization of operator knowledge to effectively use them in solving these problems in complexes of automation tools. Knowledge about the process of solving these problems and the results obtained is an informational basis for the synthesis and interpretation of the information model to support the decision-making process to assess the situation and the choice of action. With the current level of automation of the information support system to support decision making, there is a contradiction between the limited capabilities of existing situational analysis methods and the requirements for completeness and validity of its assessment by decision makers. Therefore, it is undoubtedly urgent to solve the problem of increasing the efficiency of situational analysis of the air situation by decision makers through the use of intellectual technologies. Taking into account the shortcomings of the existing system of information support of decision-making preparation processes in the centers of air traffic organization, the ways of increasing the efficiency, validity and completeness of accounting of factors of decision-making were determined. In the first stage, the state of the existing system of information support for the activity of the operators was investigated and possible ways of improving the quality of data presentation of the situation were identified by automating the solution of intellectual problems and the development of adaptive information models. In the second stage the method of synthesis of projection multilevel model of activity of operators is developed which takes into account the cognitive aspects of information processing processes in the preparation of decision making. In the third stage, a method of situational analysis of the air environment is developed, which allows us to formalize processes using a fuzzy combined knowledge model. In the fourth stage, a method of designing an information model system for air traffic service centers was developed. In the fifth stage, a method of synthesizing information elements and managing them when displaying data in different conditions of functioning of the information model is developed. In the sixth stage the model of estimation of the operator of the air traffic service system for synthesis of the complex model of the operator's standard is developed At the seventh stage, information technology was developed to intellectually support decision-making by air traffic service centers on the assessment of the air situation and to investigate the effectiveness of the developed models and methods, to investigate their impact on the promptness, completeness and adequacy of decision making in situational analysis of the air situation. Keywords: air traffic service center operator, information support system, information model, formalized description, display management.

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