MATLAB: Directivity function (polar pattern) of acoustic dipole in closed form

acousticdipoledirectivityMATLABpolar pattern

Is there a closed form formula by which I can describe the polar pattern (directivity function) of an acoustic dipole source? Like a formula which depends on the angle theta? Thank you!

Best Answer

%if true
  theta = 0:360
polar(sin(theta).^2*pi/180)% sin^2(theta)

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MATLAB: Can I simulate this example (diffraction pattern) on the CPU not the GPU

Hi Muhamed,

In the best situation, by simply casting your data to a GPU, the code following the data creation will run, so long as all of the functions are overloaded for GPU arrays. For example

% CPU version
a = rand(10);
b = fft(a);
% GPU version
a = gpuArray.rand(10);     % Create GPU array instead of a standard numeric array
b = fft(a);                % Call your code as you normally would

In the example you've highlited, the code should run fine by just making the following change

[gx, gy] = meshgrid( gpuArray.colon( -1, 1/N2, (N2-1)/N2 ) );

[gx, gy] = meshgrid( colon( -1, 1/N2, (N2-1)/N2 ) );

or what would be more common coded as

[gx, gy] = meshgrid(-1:1/N2:(N2-1)/N2);

MATLAB: Understanding how resp in phased.CustomAntennaElement works

Hi Philip,

When you pass in ang = [0 180], it is considered as two angles, az = 0 and az = 180. if you pass in ang = [0;180], then it is one angle pointing at az = 0 and el = 180.

HTH

Best Answer

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MATLAB: Can I simulate this example (diffraction pattern) on the CPU not the GPU

MATLAB: Understanding how resp in phased.Cus​tomAntenna​Element works

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