Underwater Acoustic Communications Using Vertical Receiver Arrays in Ice-Covered Shallow-Water Areasстатья
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Дата последнего поиска статьи во внешних источниках: 12 января 2022 г.
Аннотация:The feasibility of underwater acoustic communications in an ice-covered shallow-water area is demonstrated in a field experiment and by computer modeling. The advantages of vertical linear receiver arrays with different lengths and different numbers of hydrophones are investigated. The study analyzes the case when the water area depth is much smaller than the distance to the receiver array. A comparative analysis
of several algorithms of spatial signal processing for binary phase-shift keyed signals with a carrier frequency of about 1 kHz at different information transmission rates is carried out. The experiment was conducted on Lake Baikal with an ice cover thickness ≈66 cm and under intense acoustic noise associated with crack formation
in the ice surface. It is shown that when a vertical array is used, the bit error rate can be reduced by more than three times versus a single receiver.