Nguyen T. Improvement of coastal vessel traffic management systems in divergence

Thesis is devoted to an actual problem of improving the safety of navigation by means of improving coastal management systems of ship traffic at sea, and the purpose of research is to reduce accidents of ships in the territorial sea of Ukraine. To achieve this goal was set the main task - the organization of security processes discrepancy vessels in port waters and approaches thereto coastal navigation systems. To solve the main problem is formulated and studied a corresponding set of problems: errors analysis evaluation of the vessel and shore-based navigational devices, choice of ways to improve its accuracy study ways to assess the risk of collision of vessels at sea. The structure of the blocks VTS enter the calculation of distance and time of closest approach in two ways - using shore radar and AIS vessels and block assessment of their accuracy and consistency of results in terms of accuracy, with the appointment of the permissible distance closest approach and issue recommendations for the discrepancy into account the maximum length of vessels instrumental radial errors determining the place of courts in the AIS and inherited errors in calculating the closest approach by VTS; introduce VTS decision support system for the discrepancy between the vessels and the block of documentation sent recommendations, to reduce errors in VTS and vessels enter the unit conversion of coordinates of the vessel at the center of gravity estimate the risk of collision of vessels on a single parameter information - change in direction of LRM, can increase the efficiency of decision of the skipper's choice of maneuver for the discrepancy. Compared to traditional campaigns, using the observed or calculated parameters, it can advance to de-termine the danger of the situation. The studies developed mathematical models and computational schemes of technological processes, assess the situation of convergence, divergence, and the choice to maneuver in traffic, which are designed to study the ability of coastal systems to ensure safe navigation in the area of responsibility. Reviewed computational schemes and algorithms are used to build a support system for making decisions about choosing maneuver coastal system.