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6 的代码
f6_6.m
%产生线性调频信号
sig=fmlin(200,0.1,0.4);
%计算Wigner-Ville分布
[tfr,t,f]=tfrwv(sig);
%计算一阶和二阶矩
[tm,T2]=momftfr(tfr);
%结果显示
figure(1);
plot(f,tm,'LineWidth',2);
xlabel('频率 f');
ylabel('一阶矩 tm');
figu
program_6_6.m
% Program 6_6
% FIR Cascaded Lattice Realization
%
format long
num = input('Transfer function coefficients = ');
k = tf2latc(num);
disp('Lattice coefficients are'); disp(fliplr(k)');
exa6_6.m
% exa060202_cohere.m, for example 6.2.2
% to test cohere.m ;
clear all;
% 构造低通滤波系数b1和高通滤波序列b2
Fs=1;N=1024;
A=[1 1 0 0];
f=[0 .6 .7 1];
weigh=[1 10];
b1=remez(42,f,A,weigh);
A=[0 0 1
例6-6.m
clear all %初始化（给定环半径，电流，图形）
mu0=4*pi*1e-7; %真空导磁率（T*m/A）
I0=5.0;
Rh=1; %这两个常数不影响结果
C0=mu0/(4*pi)*I 0; %归并常数
NGx=21;NGy=21; %设定观测点网格数
x=l
example6_6.m
load cnoislop;
s=cnoislop;
subplot(7,1,1);
plot(s);
Ylabel('s');
title('原始信号和各层近似');
[c,l]=wavedec(s,6,'db3');
for i=1:6
decom=wrcoef('a',c,l,'db3',7-i);
subplot(7,1,i+1);
plot(deco
example6_6.m
A=[-2.8 ,-1.5377 ,0, 1.4;1.5377,0 ,0,0;1,2.6601,-4.8,-4.2136;0,0,4.2136,0];
B=[4,2,2,0;1,0,1,0]';
C=[1,1,0,3;0,2,0,1];
D=[0,-2;-2,0];
figure(1)
impulse(A,B,C,D)
grid on;
title('单位冲激响应')
xlabel
example6_6.m
load cnoislop;
s=cnoislop;
subplot(7,1,1);
plot(s);
Ylabel('s');
title('原始信号和各层近似');
[c,l]=wavedec(s,6,'db3');
for i=1:6
decom=wrcoef('a',c,l,'db3',7-i);
subplot(7,1,i+1);
plot(deco