Method for directional pattern adaptation of hydroacoustic antenna array to the current conditions of a non-stationary underwater communication channel

Abstract

An underwater acoustic communication channel is known its substantial and non-stationary multipath properties complicating the design of noise-sustainable and high-speed underwater acoustic communication systems (UACS). The paper presents the method for adapting the directional pattern of underwater acoustic antenna arrays to the current state of the channel. Its novelty is in the structure of the pilot signal intended to determine the optimal inclination angle of the transmitting antenna array and the algorithm of its reception and processing. The description of method is accompanied by numerical modeling and experimental results efficiency evaluation of proposed method.