The possibility of passive acoustic monitoring of a Scuba Diver     

V. I. Korenbaum  S. V. Gorovoy  A. A. Tagiltsev  A. E. Kostiv  A. E. Borodin  I. A. Pochekutova  A. M. Vasilistov  A. C. Krupenkov  A. D. Shiryaev  D. I. Vlasov 《Doklady Earth Sciences》2016,466(2):187-190

The problem of controlling the state and location of scuba divers is of importance. This work consider the possibility to use for this purpose a low-frequency noise of a scuba diver. The noise of a scuba diver under a dry swimming suite near the trachea and in the water at a distance of 50 m was recorded.It wa shown that both sygnals are characterized by the presence of quasi-periodic components induced by the amplitude modulation of wide-band breathing noises by the brething rhythms of a scuba diver. The quasi-periodic componentss distinguished can be used to evaluate the physiological parameters of the state of a scuba diver and to establish his location.  相似文献   

Peculiarities of the Formation of the Interference Structure of Scalar-Vector Acoustic Fields on the Shelf of the Sea of Japan     

Akulichev  V. A.  Bezotvetnykh  V. V.  Burenin  A. V.  Voytenko  E. A.  Golov  A. A.  Morgunov  Yu. N.  Strobykin  D. S.  Tagiltsev  A. A. 《Doklady Earth Sciences》2018,480(2):796-799

The results of experimental study of the spatial structure of the scalar-vector acoustic field formed during towing of a tone low-frequency emitter over the shelf of the Sea of Japan are discussed. The experiment was accomplished by towing the source of a tone signal with a frequency of 134 Hz at a depth of 20 m over various acoustic tracks at distances up to 10 km from an integrated receiving system consisting of a receiver of acoustic pressure and three orthogonal components of the acoustic pressure gradient. Special attention has been focused on study of the interference structure of the scalar and vector fields with provision of the technical reliability of the method and the results of the experiment under controlled hydrological conditions. We discuss the quantitative characteristics and peculiarities of the interference formation along tracks that differ in depth. The unique results of comparing the horizontal and vertical components of the fields are most interesting of all. They allowed us to reveal the existence of eddy structures in the acoustic field of the source over several tracks. We analyze the possibility of practical application of the results of our research.

  相似文献   

Features of the Formation of the Pulse Characteristics of Waveguides by the Long-Range Propagation of Acoustic Signals in Underwater Sound Channels     

Akulichev  V. A.  Burenin  A. V.  Voytenko  E. A.  Lebedev  M. S.  Morgunov  Yu. N.  Tagiltsev  A. A. 《Doklady Earth Sciences》2021,498(2):498-501

Doklady Earth Sciences - The results of experimental studies on the features of propagation and reception of broadband pulsed signals in an underwater sound channel (USC) at a distance of 300 km...  相似文献