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声学的一个分支。它主要研究声波在水下的辐射、传播和接收，用以解决与水下目标探测和信息传输过程有关的声学问题。水声学的研究领域主要包括：新型水声换能器；水中非线性声学；水声场的时空结构（如信号场的相关、简正波场的分离和应用、数值声场预报和信道匹配等）；水声
A branch of acoustics. It focuses on underwater radiation, propagation and reception of sound waves to solve acoustic problems associated with underwater target detection and information transmission. The research fields of water acoustics mainly include: new underwater acoustic transducers; nonlinear acoustic in water; spatio-temporal structures of water sound field (such as the correlation of signal fields, the separation and application of normal wave fields, numerical sound field prediction and channel matching)