【作者】 徐伟；

【导师】 惠俊英；

【作者基本信息】 哈尔滨工程大学 ， 信号与信息处理， 2005， 硕士

【摘要】 水声靶标系统是水声试验靶场的重要组成部分之一,在水下武器试验中担负着极其重要的职能。作为系统干端的模拟前端部分,水声靶标系统预处理机将系统湿端和信号处理机连接起来,起到了重要的桥梁作用。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。 水声靶标系统预处理机主要由模拟接收机、驱动电路和测深电路三个部分组成。其中,模拟接收机完成对接收换能器输出信号的放大、滤波等调理工作,是水声靶标系统预处理机的主体部分;驱动电路实现对D/A转换器输出信号的低通滤波,用以产生功率放大电路的输入信号;测深电路用来获取水下电子舱的深度信息,便于系统水下部分的调整和回收。驱动电路和测深电路对于水声靶标系统而言同样是不可或缺的。 整个系统经历了实验室、水池和湖上试验,湖试结果初步证明了水声靶标系统预处理机设计的正确性、合理性和可靠性。然而,包括预处理机在内的水声靶标系统设计的成功与否,还需要通过海上试验的最终检验。更多还原

【Abstract】 The Underwater Acoustic Target System (UATS), which is one of the most significant components of the Underwater Acoustic Proving Ground (UAPG), is laden with a most important function during the proving procedure of a underwater weapon.As the analog front end of the UATS’ dry parts, the UATS preprocessor functions as an indispensable bridge joining the wet parts to the signal processor.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.The UATS preprocessor is composed of three modules, including an analog receiver, a driving circuit as well as a fathoming circuit.Thereinto, the analog receiver, the main body of the UATS preprocessor, conditions the output signals of the receiving transducer, which are amplified and filtered.And the driving circuit implements the low-pass filtering of the D/A converter’s output signals and offers the result to the power amplifier circuit as its input.In addition, the fathoming circuit acquires the depth information of the underwater electronic equipment cabin to ensure a relatively convenient way to adjust and recover the underwater parts of the system.Both the driving circuit and the fathoming circuit are also essential to the UATS.The whole system has passed through the laboratorial experiment, the tank experiment and the lake experiment.The results of the lake experiment have primarily shown that the design of the UATS preprocessor is reasonable, reliable as well as correct.Nevertheless, it is the sea experiment that will finally decide whether the design of the UATS as well as that of the UATS preprocessor is successful or not.更多还原