MODEL OF ATTENTION DISTRIBUTION OF THE NAVIGATOR WHILE KEEPING A NAVIGATIONAL WATCH
https://doi.org/10.33815/2313-4763.2019.2.21.026-034
Abstract
The aim of the article is to develop a formal model and its geometric approximation that allows to describe the logic of the distribution of attention of the navigator while maneuvering including the possibility of discrete forecasting. To build this model, an analysis of international maritime regulations and situations was carried out, which allowed to determine the formal structure and logical principles of the model close to real situations while solving navigation problems.
The article provides formal approaches that take into account individual factors of the navigator’s predisposition to the perception of navigational situations and the associated dangers. A geometric approximation of the model in the form of a Cartesian cube divided into eight quadrants with local coordinate systems is proposed. This made it possible to combine data on the distribution of attention relative to eight objects according to STCW-78. Formal and logical constructions that allow to separate the conditions of the attention distribution model depending on the stage of the execution of a navigational task within the cycle have been developed. In this regard, the approaches for predicting model states using Markov discrete circuits in the conditions of continuous time have been proposed. Automation of the forecast made it possible in real time to obtain data about the speed of perception and processing of navigational data for transition to subsequent states in order to reduce the likelihood of catastrophic situations related to sea transport.
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