本文从工程应用的角度，全面阐述了水声靶标系统的模拟前端部分——水声靶标系统预处理机的设计思想和具体实现。

From an engineering point of view, this paper makes a full exposition of the design idea and concrete realization of the UATS preprocessor, that is, the analog front end of the UATS.

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如果DTE有LCU及其相关的软件，则称此dte为前端处理机同时，DTE也是数据链路系统中属于用户的最后一个设备。

If there is software assoc-elated with the LCU, it is then called a front end Processor. At one time, the DTE was the last piece of equipment that belonged to the subscriber in data link system.

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