creatlfm.m

基于超外差的瞬时测频方法的研究。请多多指教

function signal=Creatlfm(pulseLen,freq,amp,k,dt)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%signal=CreatLFM(pulseLen,from,endpos,freq,pha,amp,k,dt)
%线性调频信号发生器
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
tin=1:pulseLen;
signal1=amp*cos(2*pi*(freq*1e6*tin*dt+k*1e12*tin.^2*dt*dt/2));
signal2=amp*sin(2*pi*(freq*1e6*tin*dt+k*1e12*tin.^2*dt*dt/2));
signal=signal1+j*signal2;
return;