Get Sensor positions manually in a uniform linear array (phased.ula) in phased array system toolbox

How can we give sensor positions manually in a uniform linear array? Initially I used Phased Array System toolbox where I got microphone positions using phased.ula. Now, If I want to specify the exact positions using phased.ula, How can I do that?

array = phased.ULA('NumElements',9,'ElementSpacing',0.05);

The above one is giving me an array of microphones placed at a spacing of 0.05 with a center microphone at (0,0,0).

Now, How do I give the positions manually??

Answer 1

[Chunru]

% Get the position of the array
array = phased.ULA('NumElements',9,'ElementSpacing',0.05);
p = getElementPosition(array)

p = 3×9

0 0 0 0 0 0 0 0 0 -0.2000 -0.1500 -0.1000 -0.0500 0 0.0500 0.1000 0.1500 0.2000 0 0 0 0 0 0 0 0 0

% For ULA, you cannot set the position directly.
% You can use conformal array which allow you to specify position
a1 = phased.ConformalArray('ElementPosition', p);
a1.ElementPosition

ans = 3×9

0 0 0 0 0 0 0 0 0 -0.2000 -0.1500 -0.1000 -0.0500 0 0.0500 0.1000 0.1500 0.2000 0 0 0 0 0 0 0 0 0

% Change the element position
a1.ElementPosition(2,5) = 0.001;     % change one coordinate only as an example
a1.ElementPosition

ans = 3×9

0 0 0 0 0 0 0 0 0 -0.2000 -0.1500 -0.1000 -0.0500 0.0010 0.0500 0.1000 0.1500 0.2000 0 0 0 0 0 0 0 0 0

[Rakesh Reddy]

Thanks!!!