sar_echo.m

来自「回波信号模拟」· M 代码 · 共 85 行 · 第 1/5 页

tr=tr/Fs-Tp/2;								% fast time within a pluse duration
Nr=nr+rgmax;

%======================================================================
%%%(II) echo return modelling (point target)
%======================================================================

sig=zeros(Na,Nr); 
for i=1:Na			
	for k=1:Npt_num
  		sig(i,rg(k,i):rg(k,i)+nr)=sig(i,rg(k,i):rg(k,i)+nr)+exp(-j00*4*pi/lamda*ra(k,i))*exp(-j00*pi*Kr*(tr).^2);
   end  
end
sig_real=real(sig);
colormap(gray); contour(sig_real);

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