Contour for Moving Object
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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 :(
2 个评论
KSSV
2020-6-16
For moving Source, your Source should be having multiple values. How you want to move your Source? You have predefined points, path or randomly?
Truong Ninh
2020-6-16
采纳的回答
KSSV
2020-6-16
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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