%FRFT
%50次統(tǒng)計平均

clc
clear?all
close?all
%常量設(shè)置
f0=2000;
B=500:200:2500;
fs=4*f0;

ts=0.5;
t=-1*ts/2:1/fs:ts/2;
alfa=pi/6;
alfa11=30;


t=-1*ts/2:1/fs:ts/2;
S=sqrt（ts/fs）;
dx=sqrt（ts*fs）;
tt=-1*dx/2:1/dx:dx/2;%歸一化之后的數(shù)據(jù)
point=ts*fs+1;


snr=5;

%濾波器
%?b=fir1（256[（f0-B/2）/（fs/2）（f0+B/2）/（fs/2）]）;
for?k=1:length（B）%k為snr;
????k
????for?k1=1:50%k1為統(tǒng)計平均次數(shù)
%造信號
????????signal=exp（i*2*pi*（f0）*tt*S+i*pi*（B（k）/ts）*tt.*tt*S*S）;
????????noise=normrnd（011point）;
????????nx=normrnd（011point）;
????????ny=normrnd（011point）;

????????%加信噪比
????????%信噪比db/Hz
????????b1=10^（snr/10）;??
????????a1=std（signal）;
????????a2=std（noise）;
????????n=sqrt（b1*a2*B（k）/a1/fs）;

????????signal1=n*signal;
????????p=signal1+noise;

????????%通過濾波器
%?????????p1=conv（b

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????2668??2010-10-26?11:01??BFRFT.m
?????文件????????2373??2010-06-19?09:37??chirpallfft.m
?????文件????????2237??2010-06-02?19:13??chirpcexiang.m
?????文件????????1182??2010-06-04?11:26??Chirpexample.m
?????文件????????2135??2010-07-03?12:33??chirpFrft.m
?????文件????????2527??2010-05-11?11:38??chirpFrfthuadongchuang.m
?????文件?????????973??2010-12-28?15:09??corror.m
?????文件????????1959??2010-05-20?20:59??CWcexiang.m
?????文件????????1560??2010-06-06?15:24??cWchirp.m
?????文件????????2541??2013-06-06?22:05??Disfrft.m
?????文件?????????141??2010-04-19?16:15??fconv.m
?????文件????????1620??2010-04-19?16:40??frft.m
?????文件?????????192??2010-04-19?16:21??interp.m
?????文件????????2727??2010-04-25?10:42??jiaoduguji.m
?????文件?????????310??2010-05-19?09:42??matlabalfa2.mat
?????文件?????????316??2010-05-19?09:41??matlaberror2.mat
?????文件????????2643??2010-07-03?22:09??PJSQQfft.m
?????文件????????1276??2011-01-05?16:57??pujisnr.m
?????文件?????????715??2010-04-23?09:22??RectExample.m
?????文件?????????977??2010-12-30?16:05??twodom.m