Abstract
The quality of Vessel Traffic Management and Information Systems depends on the quality of all subsystems, in particular the quality of control centers. The most commonly used quantitative indicators of the control centers' quality are: reliability, availability, safety, and system failure. Therefore, a block diagram of reliability and the model for reliability / availability (Markov model) have been created in this paper and a detailed analysis and calculation of the quantitative indicators of critical components (servers) of the control center have been performed. The quality functioning of the control centers will enable gathering, processing, storing and dissemination of timely, safe, and reliable data and information to the services in charge of monitoring and management of maritime traffic.
Highlights
Information technology is experiencing a rapid development so that the size and complexity of computer systems have increased considerably, and the trend will surely continue in the future
Following the positive sides of the VTS systems and the development of other maritime systems, scientific and expert considerations have been given to the integration of maritime systems into a single system for monitoring and management of maritime traffic (Vessel Traffic Management and Information System - VTMIS)
Equations for the Markov reliability model can be written in the matrix form: PRSS ^t + Dth = TRSS $ PRSS ^ t h, where each element of PRSS ^ t h represents the probability that the redundant servers with hot reserve and the LAN network are in a particular state at time t
Summary
Information technology is experiencing a rapid development so that the size and complexity of computer systems have increased considerably, and the trend will surely continue in the future This has resulted in using computer systems in all spheres of society, including the maritime systems on modern ships, as well as in supervising, monitoring, managing and organizing the maritime traffic. In order to improve the safety and efficiency of maritime traffic and to protect the sea and the marine environment, it is inevitable to use modern information and communication technologies for gathering, processing, distributing and presenting the relevant data and information to the participants in maritime transport. Integration of maritime systems enhances the efficient, safe and reliable exchange of data and information at the national, regional and international levels, the effective management of maritime traffic and the preservation of the sea and the marine environment. Values amounting to 99.999%, where the system failure time is around 5 minutes per year, are the values to be strived for in the exploitation of the systems
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