《通信技能實(shí)訓(xùn)》實(shí)習(xí)報(bào)告《通信技能實(shí)訓(xùn)》實(shí)習(xí)報(bào)告實(shí)習(xí)報(bào)告1.實(shí)習(xí)目的與任務(wù)通信技能實(shí)訓(xùn)的目的在于通過(guò)學(xué)習(xí)和上機(jī)操作，使學(xué)生掌握工程計(jì)算語(yǔ)言之一的MATLAB程序設(shè)計(jì)，通過(guò)實(shí)習(xí)掌握MATLAB軟件的基本原理和基本使用方法，并能用MATLAB軟件中的命令窗口、cftool工具箱、gui工具箱和simulink等工具箱完成對(duì)本專業(yè)中的數(shù)學(xué)計(jì)算和信號(hào)模型的仿真，提高對(duì)本專業(yè)知識(shí)的理解與運(yùn)用，為專業(yè)能力的培養(yǎng)和后續(xù)課程的學(xué)習(xí)提供基。2.實(shí)習(xí)步驟與內(nèi)容（1）實(shí)習(xí)步驟通過(guò)前兩次課的內(nèi)容，熟悉MATLAB軟件編程語(yǔ)言的特點(diǎn)和規(guī)則，并通過(guò)上機(jī)操作熟悉MATLAB軟件命令窗口的基本操作。然后，在此基礎(chǔ)上過(guò)渡到MATLAB軟件中cftool工具箱、gui工具箱和simulink等工具箱的使用，并能獨(dú)立完成相應(yīng)的操作和編程。

（2）實(shí)習(xí)內(nèi)容首先，了解MATLAB軟件的運(yùn)行環(huán)境，熟悉MATLAB軟件中菜單欄、工具欄、當(dāng)前目錄、當(dāng)前空間、歷史命令窗口和命令窗口的作用分別是什么。在命令窗口使用常用的函數(shù)完成常用命令、函數(shù)的使用。命令窗口的主視窗如下圖（1）所示。圖（1）命令窗口其次，在此基礎(chǔ)上，分別學(xué)習(xí)cftool工具性箱gui工具箱和simulink等工具箱的使用，三個(gè)工具箱的主視窗分別如下圖（2）、（3）、（4）、所示。圖（2）cftool工具箱主視圖窗口圖（3）Gui工具箱主視圖窗口

圖（4）simulink工具箱主視圖窗口最后，通過(guò)系統(tǒng)的學(xué)習(xí)，利用gui界面分別完成了對(duì)科學(xué)計(jì)算器和通信用模擬濾波器的設(shè)計(jì)編程。

（2.1）科學(xué)計(jì)算器編程的設(shè)計(jì)界面、運(yùn)行界面和代碼如下：

（2.1.1）設(shè)計(jì)和運(yùn)行界面

圖（55）科學(xué)計(jì)算器編程的設(shè)計(jì)界面圖（66）科學(xué)計(jì)算器運(yùn)行界面11圖（77）科學(xué)計(jì)算器運(yùn)行界面22（2.1.2）MM文件的完整程序代碼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）通信用模擬濾波器的設(shè)計(jì)界面、運(yùn)行界面和代碼如下：

（2.2.1）設(shè)計(jì)和運(yùn)行界面圖（88）模擬濾波器設(shè)計(jì)的FFgig界面圖（99）模擬濾波器設(shè)計(jì)的運(yùn)行界面11圖（10）模擬濾波器設(shè)計(jì)的運(yùn)行界面22（2.2.2）MM文件的完整程序代碼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