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Background. To determine the parameters of the trajectory of various aircraft, as well as their relative position in airspace, information processing systems registered with general purpose cameras are currently widely used. However, to date, the scope of registration systems using general-purpose cameras, as well as the accuracy of the obtained trajectory parameters, have not been completely determined. Therefore, the creation of an error model that takes into account all factors affecting the accuracy of determining the trajectory parameters is an urgent task. Materials and methods. In the process of obtaining trajectory information, three components of this process can be distinguished – registration, processing lines and methods, algorithms and programs. Therefore, to create a model of error and analysis of factors affecting the accuracy of determining the trajectory parameters, it is necessary to consider the indicated components of the process of obtaining them. Results. The analysis showed that the error in determining the parameters of the trajectory is determined by instrumental errors. Then the mathematical model of the considered error will be presented in the form of a combination of instrumental systematic error, consisting of the error in the temporal reference of the processed video frames and the error introduced by the angular price of the pixel, as well as a random internal error, consisting of the error of the geodetic reference of the cameras and landmarks, the error introduced by the operator when processing, as well as methodological error. Conclusions. Thus, based on the analysis of the registration system on the basis of general-purpose cameras, a technological line, methods, algorithms, programs and information processing steps, as well as the factors identified thereby affecting the accuracy of determining the trajectory parameters, a mathematical model of the general error of their determination is proposed. This model allows you to determine the scope of registration systems using general-purpose cameras and the accuracy of the obtained trajectory parameters. |
