During underwater signal processing, parameter estimation and target identification are two kinds of important problems.

在水下信号处理中，参数估计和目标识别是两类非常重要的问题。

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Through lab simulator test and lake trial, the underwater signal processing module is proved to be satisfied with the system's demand and is with high time delay precision and reliability.

通过实验室的模拟器调试和湖试的验证，证明了水声信号处理模块符合系统要求，具备较高的时延估计精度及可靠性。

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It's well known that underwater acoustic channel is a coherent multi-path channel, which brings difficulties in signal processing because of the complexity of the received signal sequence.

众所周知，水下声信道是相干多途信道，信号在信道中的多径传播使得接收信号序列复杂化，因而极大地增加了信号处理的难度。

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