MATLAB: Contour for Moving Object

contour

I'm doing a homework about Noise Contour For Aircraft. Now i've done a contour for stationary noise source. But i'm stuck with create a contour for a moving noise source.
Here's my code for stantionary noise source: 
Source = [500 500];
Power = 270; %Noise Power
I0 = 10^-12; %basic intensity of noise
x = 0:50:4000;
y = 0:50:2000;
[X,Y] = meshgrid(x,y);
D = (X-Source(1)).^2 + (Y-Source(2)).^2; %distance
I = Power./(4*pi*D); %intensity of noise
L = 10*log10(I/I0); %Level of noise intensity
figure('Name','Test');
contourf(X,Y,L,[90 95])
hold on
plot(Source(1),Source(2),'r*');
title('Noise Contour for Stationary Source')
xlabel('X')
ylabel('Y')
axis equal
grid on
Please help me with the moving noise source. Thank you very much 🙁

Best Answer

x = 0:50:4000;
y = 0:50:2000;
[X,Y] = meshgrid(x,y);
Power = 270; %Noise Power
I0 = 10^-12; %basic intensity of noise
  
N = 50 ; 
sx = linspace(100,3000,N)' ; 
sy = 500*ones(N,1) ;
source = [sx sy];
for i = 1:N
  Source = source(i,:) ;  
   
  D = (X-Source(1)).^2 + (Y-Source(2)).^2; %distance
  I = Power./(4*pi*D); %intensity of noise
  L = 10*log10(I/I0); %Level of noise intensity
  figure(1);
  contourf(X,Y,L,[90 95])
  hold on
  plot(Source(1),Source(2),'r*');
  hold off
  title('Noise Contour for Stationary Source')
  xlabel('X')
  ylabel('Y')
  axis equal
  axis([0 4000 0 2000])
  grid on
  drawnow
end
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