《通信技能实训》实习报告

《通信技能实训》实习报告《通信技能实训》实习报告实习报告1.实习目的与任务通信技能实训的目的在于通过学习和上机操作，使学生掌握工程计算语言之一的MATLAB程序设计，通过实习掌握MATLAB软件的基本原理和基本使用方法，并能用MATLAB软件中的命令窗口、cftool工具箱、gui工具箱和simulink等工具箱完成对本专业中的数学计算和信号模型的仿真，提高对本专业知识的理解与运用，为专业能力的培养和后续课程的学习提供基。2.实习步骤与内容（1）实习步骤通过前两次课的内容，熟悉MATLAB软件编程语言的特点和规则，并通过上机操作熟悉MATLAB软件命令窗口的基本操作。然后，在此基础上过渡到MATLAB软件中cftool工具箱、gui工具箱和simulink等工具箱的使用，并能独立完成相应的操作和编程。

（2）实习内容首先，了解MATLAB软件的运行环境，熟悉MATLAB软件中菜单栏、工具栏、当前目录、当前空间、历史命令窗口和命令窗口的作用分别是什么。在命令窗口使用常用的函数完成常用命令、函数的使用。命令窗口的主视窗如下图（1）所示。图（1）命令窗口其次，在此基础上，分别学习cftool工具性箱gui工具箱和simulink等工具箱的使用，三个工具箱的主视窗分别如下图（2）、（3）、（4）、所示。图（2）cftool工具箱主视图窗口图（3）Gui工具箱主视图窗口

图（4）simulink工具箱主视图窗口最后，通过系统的学习，利用gui界面分别完成了对科学计算器和通信用模拟滤波器的设计编程。

（2.1）科学计算器编程的设计界面、运行界面和代码如下：

（2.1.1）设计和运行界面

图（55）科学计算器编程的设计界面图（66）科学计算器运行界面11图（77）科学计算器运行界面22（2.1.2）MM文件的完整程序代码functionvarargout=untitled(varargin)gui_Singleton=1;gui_State=struct(“gui_Name”,mfilename,...”gui_Singleton”,gui_Singleton,...”gui_OpeningFcn”,@untitled_OpeningFcn,...”gui_OutputFcn”,@untitled_OutputFcn,...”gui_LayoutFcn”,,...”gui_Callback”,);ifnarginamp;amp;ischar(varargin{1})gui_State.gui_Callback=str2func(varargin{1});endifnargout=gui_mainfcn(gui_State,varargin{:});elsegui_mainfcn(gui_State,varargin{:});endglobalaaset(handles.edit1,”String”,”0.”);set(handles.edit2,”String”,”0.”);aa=0;handles.output=hObject;guidata(hObject,handles);functionvarargout=untitled_OutputFcn(hObject,eventdata,handles)varargout{1}=handles.output;functionedit1_CreateFcn(hObject,eventdata,handles)ifispcset(hObject,”BackgroundColor”,”white”);elseset(hObject,”BackgroundColor”,get(0,”defaultUicontrolBackgroundColor”));endfunctionedit2_CreateFcn(hObject,eventdata,handles)ifispcset(hObject,”BackgroundColor”,”white”);elseset(hObject,”BackgroundColor”,get(0,”defaultUicontrolBackgroundColor”));endfunctionpushbutton2_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”1”);elsetextString=strcat(textString,”1”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton3_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”1”);elsebb=char(textString);L=length(textString);textString=bb(1:L-1);set(handles.edit1,”String”,textString)endfunctionpushbutton4_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”0”);elsetextString=strcat(textString,”0”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton5_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”9”);elsetextString=strcat(textString,”9”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton6_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”8”);elsetextString=strcat(textString,”8”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton7_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”7”);elsetextString=strcat(textString,”7”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton8_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”6”);elsetextString=strcat(textString,”6”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton9_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”5”);elsetextString=strcat(textString,”5”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton10_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”4”);elsetextString=strcat(textString,”4”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton11_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”3”);elsetextString=strcat(textString,”3”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton12_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)amp;(aa==0)set(handles.edit1,”String”,”2”);elsetextString=strcat(textString,”2”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton13_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)set(handles.edit1,”String”,”0.”);elsetextString=strcat(textString,”.”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton14_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)set(handles.edit1,”String”,”(“);elsetextString=strcat(textString,”(“);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton15_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)set(handles.edit1,”String”,”0.”);elsetextString=strcat(textString,”*”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton16_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)set(handles.edit1,”String”,”0.”);elsetextString=strcat(textString,”+”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton17_Callback(hObject,eventdata,handles)set(handles.edit1,”String”,”0.”);set(handles.edit2,”String”,”0.”);functionpushbutton18_Callback(hObject,eventdata,handles)textString=get(handles.edit1,”String”)b=eval(textString)set(handles.edit2,”String”,b)functionpushbutton19_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)set(handles.edit1,”String”,”)”);elsetextString=strcat(textString,”)”);set(handles.edit1,”String”,textString);endaa==0;functionpushbutton20_Callback(hObject,eventdata,handles)globalaatextString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)set(handles.edit1,”String”,”0.”);elsetextString=strcat(textString,”/”);set(handles.edit1,”String”,textString);endaa=0;functionpushbutton21_Callback(hObject,eventdata,handles)textString=get(handles.edit1,”String”);if(strcmp(textString,”0.”)==1)set(handles.edit1,”String”,”0.”);elsetextString=strcat(textString,”-”);set(handles.edit1,”String”,textString);end（2.2）通信用模拟滤波器的设计界面、运行界面和代码如下：

（2.2.1）设计和运行界面图（88）模拟滤波器设计的FFgig界面图（99）模拟滤波器设计的运行界面11图（10）模拟滤波器设计的运行界面22（2.2.2）MM文件的完整程序代码functionvarargout=filter(varargin)gui_Singleton=1;gui_State=struct(“gui_Name”,mfilename,...”gui_Singleton”,gui_Singleton,...”gui_OpeningFcn”,@filter_OpeningFcn,...”gui_OutputFcn”,@filter_OutputFcn,...”gui_LayoutFcn”,,...”gui_Callback”,);ifnarginamp;amp;ischar(varargin{1})gui_State.gui_Callback=str2func(varargin{1});endifnargout=gui_mainfcn(gui_State,varargin{:});elsegui_mainfcn(gui_State,varargin{:});endfunctionfilter_OpeningFcn(hObject,eventdata,handles,varargin)handles.output=hObject;guidata(hObject,handles);functionvarargout=filter_OutputFcn(hObject,eventdata,handles)varargout{1}=handles.output;functionpushbutton1_Callback(hObject,eventdata,handles)fal=get(handles.popupmenu2,”value”);al=fal;f