THE ALGORITHM FOR CALCULATING THE NAVIGATION SECURITY ZONE PARAMETERS WITH THE ACCOUNT OF CURRENT AND A PRIORI INFORMATION
Within the scope of current conception which deals with problem navigational situations connected with providing safe navigation a new version of the algorithm for the prognosis of navigation security zone parameters based on using both current and a priori navigational information is being introduced. The article shows that the correct choice of current and a priori components of navigational information withthe account of their interrelation makes it possible to simultaneously improve, while forecasting, both estimation of economic efficiency and estimation of safe navigation index.The algorithm is presented in the form of recurrent correlations binding the parameters of multiple estimations which look like multidimensional ellipsoids in the amplitude of efficiency states and navigational security on a set navigational route. It is proved that the navigation security zone forecast is to be fulfilled by the ellipsoid not minimum in volume but by those ellipsoids volumes of which do not grow compared to the initial ellipsoid. Conclusion is drawn that the algorithm being presented, while not deteriorating the process of calculating the parameters of the zone, will be more preferable when compared to other algorithms that use a priori navigational data solely.