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Rp=1;Rs=15;T=0.001; wp=0.6*pi;ws=0.4*pi; wp1=(2/T)*tan(wp/2);ws1=(2/T)*tan(ws/2); [n,wn]=cheb1ord(wp1,ws1,Rp,Rs,'s') [b,a]=cheby1(n,Rp,wn,'high','s') [bz,az]=bilinear(b,a,1/T); [b0,B,A]=dir2par(

clc; close all; clear all; Rp=3; Rs=18; fs=2000; ws1=0.2*pi; wp1=0.3*pi; wp2=0.4*pi; ws2=0.5*pi; wp3=(2*fs)*tan(wp1/2); wp4=(2*fs)*tan(wp2/2); ws3=(2*fs)*tan(ws1/2); ws4=(2*fs)*tan(ws2/2)

Rp=1;Rs=60;wp1=0.4*pi;ws1=0.5*pi;T=0.001; wp=(2/T)*tan(wp1/2);ws=(2/T)*tan(ws1/2); [n,wn]=ellipord(wp,ws,Rp,Rs,'s') ; [b,a]=ellip(n,Rp,Rs,wn,'low','s') ; [bz,az]=bilinear(b,a,1/T); [db,mag,pha,g

Rp=1; Rs=15; wp1=0.2*pi; ws1=0.3*pi; T=0.001; wp=(2/T)*tan(wp1/2); ws=(2/T)*tan(ws1/2); [n,wn]=ellipord(wp,ws,Rp,Rs,'s') %从此处可以计算阶数n [b,a]=ellip(n,Rp,Rs,wn,'low','s') %由b,a的值可以得到系统函数 [bz,az

clc;clear all; Rp=0.5;Rs=50;fp1=10;fp2=20;fs1=5;fs2=25;T=0.01; wp1=2*pi*fp1*T;wp2=2*pi*fp2*T; wp3=(2/T)*tan(wp1/2);wp4=(2/T)*tan(wp2/2); wp=[wp3,wp4]; ws1=2*pi*fs1*T;ws2=2*pi*fs2*T; ws3=(2/T)*ta

Rp=1;Rs=25;wp1=0.2*pi;ws1=0.4*pi;T=0.001; wp=(2/T)*tan(wp1/2);ws=(2/T)*tan(ws1/2); [n,wn]=cheb2ord(wp,ws,Rp,Rs,'s') %从此处可以计算阶数n [b,a]=cheby2(n,Rs,wn,'low','s') %由b,a的值可以得到系统函数 [

clear; clc; N=128; n=0:1:N-1; t=0.01*n; x=2*sin(4*pi*t)+5*cos(16*pi*t); y=x+0.8*randn(1,length(t)); x1=fft(x); magx1=abs(x1); w=2*pi/N*n; subplot(2,1,1); plot((w*100)/(2*pi),magx1);title('

function [x,y]=cardg(bs,s) % 此函数用来编写心形线所围成的区域 % 编写日期：2007-7-1 nbs=4; if nargin==0 %如果没有输入参数 x=nbs; return end dl=[ 0 pi/2 pi 3*pi/2 pi/2 pi 3*pi/2 2

x=0:0.1:pi; y=sin(x); [p,mu]=polyfit(x,y,9) x1=0:0.1:2*pi; y1=sin(x1); y2=polyval(p,x1); plot(x1,y,'k*',x1,y1,'k-')

SUBPLOT('position',[.05 .3 .6 .6]); a=-pi:0.01:pi lambda=3; L=0.1*lambda; pi=3.14; ro=(cos(pi*L/lambda*cos(a))-cos(pi*L/lambda)) polar(a,ro); title('Caracteristica de radiatie');grid;