unit4.pas

噪声对通信系统的影响试验程序 模仿各种噪声对不同通信系统的影响 具有很强的学习价值

unit Unit4;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, TeEngine, Series, ExtCtrls, TeeProcs, Chart, StdCtrls, Buttons;

type
  TErrorFrm = class(TForm)
    GroupBox1: TGroupBox;
    Chart1: TChart;
    Series1: TLineSeries;
    BitBtn12: TBitBtn;
    GroupBox2: TGroupBox;
    Image1: TImage;
    Image3: TImage;
    Label1: TLabel;
    Image2: TImage;
    Label2: TLabel;
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure FormDestroy(Sender: TObject);
    procedure BitBtn12Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  ErrorFrm: TErrorFrm;

implementation
uses publicdata,unit1;

{$R *.dfm}

procedure TErrorFrm.FormClose(Sender: TObject; var Action: TCloseAction);
begin
Action:= caFree;
end;

procedure TErrorFrm.FormDestroy(Sender: TObject);
begin
ErrorFrm:=nil;
end;

procedure TErrorFrm.BitBtn12Click(Sender: TObject);
begin
    close;
end;

procedure TErrorFrm.FormCreate(Sender: TObject);
var
    i: integer;
    Dct,Dct1:     TRect;
    left,top,right,down:integer;
begin
    left:=0;
    top:=0;
    right:=left+16;
    down:=top+16;
    Dct := Rect(left,top,right,down);
    Dct1:= Rect(left,top,right,down);
    for i:=1 to length do
    begin
        left:=((i-1) mod 32)*16;
        top:=((i-1) div 32)*16;
        right:=left+16;
        down:=top+16;
        Dct:=Rect(left,top,right,down);
        Series1.AddXY(i,ReceiveSignal[i],'',clred);
        Series1.AddXY(i+1,ReceiveSignal[i],'',clred);
        if(ReceiveSignal[i] = BaseSignal[i]) then
        begin
            Image1.Canvas.CopyRect(Dct,image2.Canvas,Dct1);
        end
        else
        begin
            Image1.Canvas.CopyRect(Dct,image3.Canvas,Dct1);
        end;
    end;

end;

end.