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Abstract

The main features of an efficiency evaluation of positional (stationary and autonomous) sonar systems at the design stage and deciding on the coordinates of the antenna installation site based on modeling and visualization of the expected surveillance zones using intelligent geographic information systems are considered in the paper. The issues of intellectual decision support for the rational spatial distribution of receiving antennas are considered. The influence of the information support quality of geographic information systems on the calculations accuracy of expected surveillance zones of the sonar systems under the various hydrological and acoustic conditions is assessed. A new performance indicator in the form of spatial volume of the expected surveillance zone is proposed. A method for solving the optimization problem of finding the maximum volume of the illuminated space as a coordinates function of the antenna placement within a given observation area, with fixed technical characteristics of the monitoring system and given noise conditions, acoustic characteristics of the detection object and the observation time has been developed. The proposed approach to selecting the rational variant of the receiving antennas location of positional hydroacoustic facilities and systems in the interests of dispatching geospatial processes using as a mean of intelligent support the modern hardware and software complex realizing the specified selection by such efficiency indicator as volume of illuminated space, in the conditions of a two-dimensionally inhomogeneous model of medium, close to real hydrological-acoustic conditions, allows to increase the accuracy of assessing the illumination efficiency of underwater environment of positional hydroacoustic means and systems and significantly reduce the design and development time as compared with the traditional approach, requiring expensive field observation over a long period of time.