Abstract
A deep-sea underwater acoustic (UWA) communication test is carried out based on cyclic shift keying (CSK) spread spectrum underwater acoustic communication. The test results of deep-sea UWA channel with depth of 1100m is given under the condition that the emission depth is 20m from the water surface and the horizontal communication distance is 3km. The analysis results show that the CSK spread spectrum communication is sensitive to the deep-sea UWA channel. Under the condition of 1100m receiving depth, the deep-sea UWA channel has a serious impact on the CSK spread spectrum communication. Aiming at this problem, a time-updating based time reversal mirror CSK decoding processing method is proposed.
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