Mashoshin A. I.
The main difference between the hydroacoustic field and other physical fields is significant and complicated dependence of signal propagation law on the hydroacoustic conditions (HC). Therefore, algorithms for solving the most practical problems of hydroacoustics, which, as a rule, are inverse problems, should take into account current hydroacoustic conditions, i.e., must be consistent with the environment of propagation of hydroacoustic signals and interference. The purpose of the paper is to review practical applications of hydroacoustics, based on the use of algorithms, agreed with the environment. Such applications include: tomography of the ocean; detection of sea objects at greater distances; classification of sea objects; a joint solution of classification and ranging problems; underwater sound communication. The quality of solution of these problems depends largely on the accuracy of the parameters of the waveguide. Researches to improve this accuracy must be fulfilled in two directions: development of methods and devices of in-situ measurement of current parameters of the environment; development of adequate models of the waveguide, oriented to the solution of practical problems and considered the possibilities of these methods and devices.