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- Example 1
- Example 2
- Example 3
- Example 4
- Example 5
- Example 6
- Example 7
- Example 8
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SOFiA application example 4
File(s)
Run `sofiaAE4.m`.
Locate the folder `EXAMPLE2_LevelResolution` containing the required array data.
Output
Take care: This figure shows a frontal view of the array response and the photo on top shows the rear side of the array.
Code
/*
SOFiA example 4: Level/Space Resolution
SOFiA Version : R11-1220
Array Dataset : R11-1018
clear all
clc
% Read VariSphear dataset
% !!! LOCATE THE FOLDER: "EXAMPLE2_LevelResolution"
timeData = sofia_readVSAdata();
% Transform time domain data to frequency domain and generate kr-vector
[fftData, kr, f] = sofia_fdt(timeData);
% Spatial Fourier Transform
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Nsft = 5;
Pnm = sofia_stc(Nsft, fftData, timeData.quadratureGrid);
% Radial Filters for a rigid sphere array
Nrf = Nsft; % radial filter order
maxAmp = 10; % Maximum modal amplification in [dB]
ac = 2; % Array configuration: 2 = Rigid Sphere
dn = sofia_mf(Nrf, kr, ac, maxAmp); % radial filters
dn = sofia_rfi(dn); % radial filter improvement
% Make MTX
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Nmtx = Nsft;
krIndex = 600; % Here we select the kr-bin (Frequency) to display
mtxData = sofia_makeMTX(Nmtx, Pnm, dn, krIndex);
% Plot the response
figure(1)
clf();
sofia_visual3D(mtxData, 0);
view(90, 0)
disp(' ');
disp(The plot shows the response at a frequency of ',num2str(round(10*f(krIndex))/10),'Hz');
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*/ |
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