摘要
水声技术在军事上的应用已有近百年的历史。随着信息科学和电子技术的迅速发展，水声设备——声呐系统已逐步实现系统化、数字化和智能化。而将水声技术应用于水下地形探测是航空声呐研究发展中心在民用方面的一个有益尝试，也是本文的研究意义所在。
便携式多波束水下地形测量声呐系统(简称地形声呐)主要用于大型库区水下地形的测绘。本文首先介绍了地形声呐的设计指标，然后叙述了多波束地形声呐的测距原理，并对具体的实现过程进行了计算机仿真，给出了定向波束图案。论文着重讨论了地形声呐数字处理部分的原理设计和工程实现，同时给出了数字信号处理器的软件设计思想和信号处理流程图。论文最后介绍了基于VC的计算机用户界面的设计和编程，以及模拟预处理部分与数字信号处理部分的接口规范。
通过水池的初步静态实验，我们研制的多波束地形探测声纳系统已经达到了了系统的设计要求。
Underwater acoustic has been used in military for almost one hundred years. With the rapid development of information science and electronic technical, sonar system was hardware realized by subsystem and digital signal processors, expert system software was also available. It was a benefit try to apply underwater acoustic on underwater terrain survey for aerial sonar research and development center. It was also the purpose of this thesis.
Portable multiple beam sonar system is mainly used to survey the underwater terrain of huge reservoir. Firstly, the thesis introduces the index of performance. Secondly, it explains the ranging principle of sonar system, and simulates the processing procedure on computer, gives the beam pattern. The thesis focuses on the schematic design and hardware implementation of digital signal processing module. At the same time, it gives the design consideration and signal processing flow diagram. Finally, the thesis describes the Visual C++ software programming of computer interface, and the interface specification between analog preprocessing module and digital signal processing module.
The multiple beam sonar system for terrain survey has met the system's requirement via the results of pool static experiments.
引文
1．《声信号处理及应用》 肖国有，屠庆平编著 西北工业大学出版社
2．《工程水声原理》 刘伯胜，雷家煜编著 哈尔滨工程大学出版社
3．《数字信号处理》 胡广书编著 清华大学出版社
4．《CPLD技术及其应用》 宋万杰编著 西安电子科技大学出版社
5．《并行端口编程》 韩永彬，袁潮译 中国电力出版社
6．《C程序设计》 谭浩强编著 清华大学出版社
7．《VISUAL C++ 5.0应用指南》 冯峰，赵栋伟等编著 人民邮电出版社
8．《VISUAL C++ 6.0技术内幕》 David J．Kruglinski SCOT WINGO，Scot Wingo，George Shepherd编著 北京希望电子出版社
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