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自动化毕业设计论文

MATLAB在离散信号时域变换与运算中的应用与实现

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时间:2013/1/8 22:03:42  作者:  来源:  查看:94  评论:0
内容摘要:“信号与系统”课程是一门实用性较强、涉及面较广的专业基础性课程,是电子信息类专业本科学生的必修课程,也是电子信息类专业硕士研究生入学必考的课程。该课程是将学生从电路分析的知识领域引入信号处理与传输领域的关键性课程,对后续专业课起着承上启下的作用。该课程的基本方法和理论大量应用于计...

“信号与系统”课程是一门实用性较强、涉及面较广的专业基础性课程,是电子信息类专业本科学生的必修课程,也是电子信息类专业硕士研究生入学必考的课程。该课程是将学生从电路分析的知识领域引入信号处理与传输领域的关键性课程,对后续专业课起着承上启下的作用。该课程的基本方法和理论大量应用于计算机信息处理的各个领域,特别是通信、数字语音处理、数字图像处理、数字信号分析等领域,应用更为广泛。因此,该课程具有重要的意义。

  长期以来,“信号与系统”课程一直采用黑板式的单一教学方式,学生仅依靠做习题来巩固和理解教学内容,对课程中大量的应用性较强的内容不能实际动手设计、调试、分析,严重影响和制约了教学效果。由于黑板式教学,课程中大量信号分析结果缺乏可视化的直观表现,学生将大量的精力和时间用于繁杂的手工数学运算,而未真正理解所得到的结果。因此,为了把学生从繁琐的数学运算中解脱出来,从而将更多的时间用于对信号与线性系统的基本分析方法和应用的理解与思考。该课程急需进行教学方法的改革,即实现在实验环境中,以计算机为辅助教学手段,用信号分析的软件帮助学生完成数值计算、信号与系统分析的可视化建模及仿真调试。Mathworks公司推出的MATLAB开发平台经过十多年的发展,已经成为科技界最流行的应用软件,它具有高效率的数值计算及符号计算功能、完备的图形处理功能、友好的用户界面及接近数学表达式的自然化语言和功能丰富的应用工具箱。由于MATLAB具有上述特点,为开发“信号与系统”计算机辅助教学(CAI)软件提供了强有力的工具。

本论文详细介绍了基于MATLAB 6.5 实现的离散序列时域变换与运算演示程序的设计与实现过程,该程序用直观、形象的二维曲线,展示了离散序列时域运算与变换的实现过程和规律,有效地弥补了课堂上黑板教学的不足。本文重点介绍了演示设计的相关信号分析理论知识、开发平台及用户界面开发环境,最后给出了程序运行界面及功能示例。

 

关键词:信号与系统、CAI、离散序列、MATLAB

 

 

 

 

 

 

 

 

Abstract

“Signals And Systems” is a basic special field of course. Its usability is very strong,and its practicability is very wide. It is a major course of undergraduate whose specialized subject is Electronic Information. And it is an examination of Electronic Information postgraduates. This course leads students from the knowledge of electric analysis into the knowledge of transfer area. It acts on many later’ courses. Its method and theory are used in computer information’s many fields widely. Special in the field of Communication, Digital Voice Processing, Digital Image Processing and Digital Signal Processing. So it is useful and important that hold the method and ability of analysis. 

The teaching mode of “Signals And Systems” is singleness straight. Just teaching and learning on the blackboard. Students only depend on exercises to understand the content of it. Many applications of contents can not start work by hands. This instance influences the effect of study severity. Students spend lots of time on math operation. But can not understand the true. In order to leave those math operation and let students spend more time on consider. We must do something to make the teaching and learning become easier. Mathworks’ MATLAB is a good tool to achieve all this. MATLAB is the best of all applications in science. It is efficiency on numerical value count and denotation count. It has self-contained figure processing function, friendly user interface, easy language and toolbox with full functions.

This dissertation introduce the process of design and implement about commutation and operation on disperse sequence in time domain which with MATLAB 6.5. It use the planar curve, so the operation and commutation’s process and rule is very intuitionistic and visualize. It make up the shortage about blackboard teaching. This dissertation introduce the theory about “Signals And Systems”、empolder flat、GUI,and I give the program interface and example.

 

Key words: Signals And Systems、CAI、Discrete-time signals、MATLAB

Tags:离散 信号 变换 运算 中的 应用 实现 

Tags:离散 信号 变换 运算 中的 应用 实现   


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