源码文件
% dsb1.m % Matlab demonstration script for DSB-AM modulation. The message signal % is +1 for 0 < t < t0/3, -2 for t0/3 < t < 2t0…
frequency+selective 源代码
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源码文件
% dsb1.m % Matlab demonstration script for DSB-AM modulation. The message signal % is +1 for 0 < t < t0/3, -2 for t0/3 < t < 2t0…
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function a = set(a,varargin) % SET Set FREQUENCY properties and return the updated object % $Id: set.m 85 2005-08-31 12:36:23Z ma…
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function c = plus(a,b) % overloading of operator + % $Id: plus.m 39 2004-08-06 09:05:50Z mairas $ if isa(a,'spectrum') & isnume…
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function c = minus(a,b) % overloading of operator - % $Id: minus.m 39 2004-08-06 09:05:50Z mairas $ if isa(a,'spectrum') & isnu…
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function [d,f]=d2statio(sig); %D2STATIO Distance to stationarity % [D,F]=D2STATIO(SIG) evaluates the distance of the signal % to s…
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% % FUNCTION 1.2 : "cp0101_bandwidth" % % Evaluates the bandwidth of the input 'signal' with sampling period % 'dt' % Bandwid…
源码文件
% % FUNCTION 1.2 : "cp0101_bandwidth" % % Evaluates the bandwidth of the input 'signal' with sampling period % 'dt' % Bandwid…
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function S1=pinyu(S,fs) S1=fft(S,1024); %求出原始信号的傅立叶变换 w=(0:511)/512*(fs/4); figure(20) plot(w,abs(S1(1:512)')); title(' 滤波前' …
源码文件
%下变频的过程 %先乘本地载波后再经过低通滤波器 function R2=xbianpin(R,ft,N,Ts) T=0.001/N; tdi=0:2*Ts:N*T-Ts; s1=R.*cos(2*pi*ft*tdi); sss=fft…