A USE OF HYDROPHISICAL RESEARCH COMPLEX IN FULL-SCALE EXPERIMENTS ON THE SHELF OF THE SEA OF JAPAN
Fall 2019, a full-scale integrated experiment took place on the shelf of the Sea of Japan in Peter the Great Bay. It was aimed at studying the influence of internal waves on the propagation of complex low-frequency signals. Experimental works were performed using novel hydrophysical research complex. It consists of the vertical 8-element receiving antenna, autonomous wideband transmitting station, multi-element thermo-strings, and hydrostatic pressure recorder. Within 24 hours, packets of different signals with linear frequency modulation and phase-shift keying were emitted and recorded with simultaneous measurements of characteristics of the internal waves field along the propagation path. During experiments, the technical parameters of the hydrophysical research complex were verified, and some experience of performing integrated oceanological experiments were obtained. Differences in the usage of linear frequency modulated and phase-shift keyed signals were found. The influence of hydrological interference on underwater acoustic signals propagation typical for the aquatic area was demonstrated.